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8.f)1) Comfort Lake Forest Lake Watershed District Watershed Management Plan Update Meeting Date: 01/18/2011 Agenda Item: �,,r �� < City Council Agenda Report City of Scandia 14727 209th St. North Scandia, MN 55073 (651) 433-2274 Action Requested: Receive a report on the update of the Comfort Lake Forest Lake Watershed District's (CLFLWD) Watershed Management Plan. No action required. Deadline/Timeline: • Tentative approval of draft by CLFLWD Board: January 20 • 60-day local review: January through March • Public Hearing: May or June • Completion of BWSR (State) review: October(approx.) • Adoption by CLFLWD Board: November (approx.) Background: • The CLFLWD is in the process of updating their plan. This watershed district includes a part (generally the northeast corner) of the City of Scandia, including Bone Lake and Sylvan Lake. • Scandia will soon be asked to review the plan as part of the required process before a formal public hearing is held and it is submitted to the Board of Water and Soil Resources (BWSR) for approval before adoption by the District. • Some excerpts of the draft plan are attached to this report. The full report is available in the city office, and an electronic copy is also available. Some changes to this draft are expected before it is approved by the CLFLWD Board later this month. • Scandia is included in three different watershed districts: CLFLWD, CMSCWD (Carnelian Marine St. Croix Watershed District) and the Rice Creek Watershed District (RCWD.) • The City is required to have a Local Water Management Plan (LWMP) that is in conformance with the plans of all three watershed districts. Scandia's LWMP is Appendix E of the Comprehensive Plan adopted in 2009. When the watersheds update their plans, the City is required to update its own plan. Since Scandia's LWMP was prepared, both CMSCWD and RCWD have updated their plans. Once CLFLWD updates theirs, the city must complete its own update. • Section 8 of Volume 1, page 80-85 of the draft describes Page 1 of 2 O1/10/11 intergovernmental coordination and impact of the new plan. The table on page 81 indicates that CLFLWD recommends that Scandia update its local plan by January of 2012. Updating the local plan will require a thorough review of the plans of all three districts to determine what amendments are necessary. Scandia has not budgeted for this work in 2011. Staff has suggested to CLFLWD staff that the timeline be changed to June of 2012, so that the city can budget funds appropriately. Recommendation: I recommend that the Council receive the report. If the Council has particular concerns any questions or concerns about the plan, staff will follow up appropriately. Attachments/ Excerpts, CLFLWD 2011 Draft Watershed Management Plan: Materials provided: • Table of Contents • Executive Summary(Volume l, Page 1) • Volume 1, Section 4.6, Projects, Bone Lake (pages 41-42) and Sylvan Lake (pages 44-45) • Volume 1, Section 8, Intergovernmental Coordination and Impact (pages 80-86) • Volume 2, Figure 12, CLFLWD Surface Waters and Major Subwatersheds (map) • Volume 2, Bone Lake Watershed Summary • Volume 2, Sylvan Lake Watershed Summary Contact(s): Doug Thomas, CLFLWD Administrator 651 209-9753 Prepared by: Anne Hurlburt, Administrator (CLFLWD Plan Update) Page 2 of 2 O1/10/11 TABLE OF CONTENTS Volume 1 1. EXECUTIVE SUMMARY........................................................................................................................1 2. INTRODUCTION....................................................................................................................................2 2.1. Purpose.........................................................................................................................................3 2.2. Mission..........................................................................................................................................3 2.3. Layout of this Plan........................................................................................................................4 2.4. History of District...........................................................................................................................5 2.5. Board of Managers and Administration........................................................................................6 2.6. Committees...................................................................................................................................7 3. ISSUES &GOALS.................................................................................................................................8 3.1. Floodplain .....................................................................................................................................8 3.1.1 Issue................................................................................................................................8 3.1.2 Goals................................................................................................................................8 3.1.3 Objectives........................................................................................................................8 3.2. Lakes ............................................................................................................................................9 3.2.1 Issue................................................................................................................................9 3.2.2 Goals................................................................................................................................9 3.2.3 Objectives......................................................................................................................10 3.3. Streams.......................................................................................................................................11 3.3.1 Issue..............................................................................................................................11 3.3.2 Goals..............................................................................................................................11 3.3.3 Objectives......................................................................................................................11 3.4. Wetlands.....................................................................................................................................12 3.4.1 Issue..............................................................................................................................12 3.4.2 Goals..............................................................................................................................12 3.4.3 Objectives......................................................................................................................12 3.5. Upland Resources......................................................................................................................13 3.5.1 Issue..............................................................................................................................13 3.5.2 Goals..............................................................................................................................13 3.5.3 Objectives......................................................................................................................13 3.6. Groundwater...............................................................................................................................14 3.6.1 Issue..............................................................................................................................14 3.6.2 Goals..............................................................................................................................14 3.6.3 Objectives...................................................................................................................... 14 3.7. Public Education.........................................................................................................................15 3.7.1 Issue..............................................................................................................................15 3.7.2 Goals..............................................................................................................................15 3.7.3 Objectives......................................................................................................................15 3.8. Interagency Communication.......................................................................................................16 3.8.1 Issue..............................................................................................................................16 3.8.2 Goals..............................................................................................................................16 3.8.3 Objectives......................................................................................................................16 CLFLWD Watershed Management Plan 4. IMPLEMENTATION.............................................................................................................................17 4.1. Introduction.................................................................................................................................17 4.1.1 Management Areas .......................................................................................................18 42. Implementation Plan Structure...................................................................................................18 4.3. Implementation Schedule and Cost Tabie..................................................................................21 4.4. Administration (1000 Series)......................................................................................................21 4.4.1 Board Administration (1001)..........................................................................................21 4.4.2 General Office Expenses (1002) ...................................................................................21 4.4.3 General Administration (1003).......................................................................................21 4.4.4 Professional Services(1004).........................................................................................22 4.5. Programs(3000 Series)..............................................................................................................22 4.5.1 District Rules and Rulemaking (3001)...........................................................................23 4.5.2 Permitting (3002) ...........................................................................................................24 4.5.3 Monitoring and Data Assessment(3003)......................................................................25 4.5.4 Non-Point Source Pollution Abatement Program (3004)...............................................29 4.5.5 Education and Outreach (3005).....................................................................................32 4.5.6 Technical Resource Sharing and Interagency Communication(3006).........................33 4.5.7 Research (3007)............................................................................................................35 4.5.8 Measurement of Progress (3008)..................................................................................36 4.6. Projects(5000 Series)................................................................................................................38 4.6.1 Floodplain (5100 Series)................................................................................................39 4.6.2 Lakes(5200 Series).......................................................................................................39 4.6.3 Streams(5300 Series)...................................................................................................51 4.6.4 Wetlands (5400 Series).................................................................................................54 4.6.5 Upland Resources(5500 Series)...................................................................................58 4.6.6 Groundwater(5600 Series) ...........................................................................................59 4.6.7 Public Education (5700 Series).....................................................................................61 4.6.8 Interagency Communication (5800 Series)...................................................................61 , r�-��.;,. :,, aF ; � �� ' , . � �'� ', �. ,,s' x:�, � � t ' "•"'f � 1 s� � . lP { �5 1t�0. �' w �. ��:��` � �'�t�� <�y � �'`1 . ,�� '•''� ' ,��`�'f �+ �- � , � x � .j ��.h �'. ^�.tt d:� . .� • �„� ,�` ,. �,�� "� ��,�`� � _ �. �� t Jf +`� �y� .��: � . . � -w � ��. .��; �,. _ � .yM�� ' "` .a � � '�� "� +�� ,�:/��y,,L,�"�•,; �} F ' � ki '� L � �e^ .._`� { �''� y"i :�`5 �. �� i ,i�.� �d ...�_ �� (�� a; .. � `� �•,��• ,� ! �f'X� s� ' � �,! �4 �� "a� ..1`�� fF,�}� .++-��,+ a�r, .�'J.. � f �i + � d� Kt � � �.. d�'r:'"'�,°� . `� .�' + �� `°' r �'��`, �'y - t � ;� ' � ,�'w�i�d��' ��E,� F � �_. ,�� ` � �.i, � � R�� <,� ..J� . �;�! �� i�� r �� _�; �.+ "� p S'' ` .e .� � � �;.:,�r Y�� 's t, '.`.�; ��'�� r�� « i�s i��rr^`�� ' ,>� . i� . � y�{� � �, „� � ,��- � �.�'� � �� <�,�'" � r �: p' f. �'r y� „�� v�` .,c '� f�° °+ I�r i _ ��.� , � R�' � f ��J ` �`"�", s�► '�� '� � _ ,� ��, _�f�`:��,.,,:'-�.��. CLFLWD Watershed Management Plan 5. IMPLEMENTATION SCHEDULE AND COST TABLE.......................................................................66 6. MEASURING IMPLEMENTATION PROGRESS.................................................................................69 6.1. Quantitative Assessment: Issue Areas Addressed.....................................................................69 6.1.1 Projects..........................................................................................................................69 6.1.2 Programs.......................................................................................................................69 6.2. Adaptive Management: Meeting Lake Goals for Water Quality.................................................70 7. FINANCING APPROACH....................................................................................................................71 7.1. Funding Options..........................................................................................................................71 7.1.1 Ad Valorem Taxes.........................................................................................................71 7.1.2 Special Assessments.....................................................................................................72 7.1.3 Water Management Fees..............................................................................................72 7.1.4 Emergency Projects.......................................................................................................72 7.1.5 Outside Funding Sources..............................................................................................72 7.2. Proposed Funding Mechanisms.................................................................................................73 7.2.1 General Funding............................................................................................................73 7.2.2 Alternate Funding Methods............................................................................................78 8. INTERGOVERNMENTAL COORDINATION AND IMPACT...............................................................81 8.1. Local Government Agencies.......................................................................................................81 8.1.1 Roles..............................................................................................................................81 8.1.2 Impact of Plan................................................................................................................81 8.2. State Government Agencies.......................................................................................................87 8.2.1 Roles..............................................................................................................................87 8.3. Federal Government Agencies...................................................................................................88 8.3.1 Roles..............................................................................................................................88 9. AMENDMENTS TO THIS PLAN..........................................................................................................89 10. ANNUAL REPORTING........................................................................................................................90 .�� +a.�-•. % - '` i . A >'E � ,�.. , f r , y d r�c'j";��r�r �"!-�t'r' � � ,, � �F. ,�"'u' �f z '. a �� t� .i� � a �' � � �i�� A � � . 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YZ� �� '� �� '. .' � �" ,. _ � 4+ ��4 x�'�'j," � .�.r'.. . . . � .� . . .. _ . . . � _.. � � , ��'Sl�� . . . _ ,. . ., �Y+ w1 Y ..�� ..� . .. . � , �; �'`� , , �, - �;9�'`+ . .� ."��,pg� . �; � v. "' - . .J � Q ��l� �.I�Y�yCi, � }d � �: . .�( �� .� � .. . a� y� t, , �. r�k��„ f,F�r`�.., '�.�.. �'� �A �� Cj�'a#4 3:��' � 1 �N • �4 � , <�� z M R� +�w �.'.�;w*.lP t#ie�L��: . iS4�. . ��4tIY/�_�,wi�,�� . ' � ��.4J,t 'e .F �` �`:s *r � � � �#.'�.�+ira�i+��'��.X�-�`:..9r,��.. CLFLWD Watershed Management Plan Volume 2 11. LAND AND WATER RESOURCE INVENTORY..................................................................................92 11.1. Location 92 11.2. Climate and Precipitation.........................................................................................................94 11.2.1Climate Change.............................................................................................................96 11.3. Topography and Geomorphology............................................................................................98 11.3.1 Meltwater Deposits and Ground Moraine...............................................................101 11.3.2 Terminal Moraine Deposits..................................................................................... 101 11.3.3 Lake Deposits.........................................................................................................101 11.4. Soils ................................................................................................................................102 11.5. Geology 104 11.5.1 Surficial Geotogy.....................................................................................................104 11.5.2 Bedrock Geology....................................................................................................105 11.6. Surface Water Resources.....................................................................................................108 11.6.1 Watershed Hydrology............................................................................................. 108 11.6.2 DNR Public Waters and Wetlands..........................................................................111 11.6.3 Rivers and Streams................................................................................................114 11.6.4 Active Recreation Lakes.........................................................................................115 11.6.5 Passive Recreation Lakes......................................................................................134 11.6.6 Wetlands.................................................................................................................141 11.6.7 Drainage Systems...................................................................................................146 11.7. Impaired Waters....................................................................................................................147 11.7.1 Lakes.......................................................................................................................147 11.7.2 Watercourses..........................................................................................................149 11.8. Floodplain..............................................................................................................................151 11.9. Natural Communities.............................................................................................................152 11.9.1 Minnesota Land Cover Classification System Mapping .........................................152 11.10. Fish &Wildlife..........................................................................................................................155 11.10.1 Fish.........................................................................................................................155 11.10.2 Wildlife ....................................................................................................................155 11.11. Groundwater Resources..........................................................................................................156 11.11.1 Aquifers...................................................................................................................156 11.11.2 Groundwater Recharge, Groundwater Discharge, &Groundwater Flow.........................................................................................................................159 11.11.3 Groundwater Appropriations,Well Head Protection Areas, and Source Water Assessment Areas....................................................................159 11.11.4 Groundwater Quality and Quantity.........................................................................162 11.11.5 Groundwater Monitoring.........................................................................................162 11.11.6 Groundwater Dependent Natural Resources .........................................................162 11.11.7 Groundwater Studies..............................................................................................165 11.12. Monitoring................................................................................................................................166 11.12.1 Ongoing Efforts.......................................................................................................166 11.12.2 Additional Project-Specific Monitoring Efforts.........................................................170 11.13. Land Use and Public Utilities................................................................................................... 171 11.14. Unique Features and Scenic Areas.........................................................................................172 11.14.1 Rare Biological Features ........................................................................................172 CLFLWD Watershed Management Plan 11.15. Pollutant Sources .................................................................................................................... 179 11.16. Permitted Discharges.............................................................................................................. 179 11.16.1 Municipal Separate Storm Sewer System (MS4) Stormwater................................179 11.16.2 Construction and Industrial Stormwater..................................................................179 11.16.3 Point Sources.......................................................................................................... 180 11.16.4 Feedlots.................................................................................................................. 180 11.17. Potential Environmental Hazards............................................................................................ 181 11.17.1 Contaminated Sites................................................................................................. 181 11.17.2 Leaking Above-& Below-ground Storage Tanks....................................................181 11.17.3 Wells.......................................................................................................................181 11.18. District Study Inventory............................................................................................................184 11.18.1 CLFLWD Six Lakes TMDL Implementation Plan (February 2010).........................184 11.18.2 CLFLWD Six Lakes TMDL(February 2010)...........................................................184 11.18.3 Watershed and Lake Water Quality Modeling Investigation for the Development of a Watershed Capital Improvement Plan (Dec. 2007)................... 185 11.18.4 Hydraulic Capacity and Model Calibration Report(May 2005)...............................185 11.18.5 Comfort Lake, Chisago County Phase I Resource Investigation (April 2000, last revised September 2002).............................................................185 11.18.6 Shoreland Inventory of Comfort Lake, Chisago County(April 1999) ..................... 186 11.18.7 Lake Assessment Program, Big and Little Comfort Lakes, Chisago County, Minnesota(April 1995)................................................................186 11.18.8 Abandoned JD 1 ..................................................................................................... 186 11.18.9 Lake Water Quality Summary for Shields, Bone, Sylvan (Halfbreed) and Forest Lakes (February 1990).........................................................................187 11.18.10 A Stable Isotope/Chemical Investigation of Lake-Groundwater Interactions at Forest Lake(June 1990).................................................................187 11.18.11 Lake Diagnostic Feasibility Study for Forest, Shields and Bone Lakes (November 1987).........:......................................................................188 11.19. Status of Local Comprehensive Plans and Water Plans.........................................................188 11.20. Shoreland and Floodplain Ordinances....................................................................................189 12. GAPS ANALYSIS.............................................................................................................................190 13. REFERENCES ................................................................................................................................191 s �` � � � .��.� � + � �,�vA� � � ' � �� `s � � r� � . ` �+ , ' �..4 r �v_ �, •� � � � �, i' ?�� . �., �� 4 4 y �: !� y P6�: d�� s ,� � ,�. ��^A ,�yt, ,�,. � . i�� p �, , . � � � � • A. �: c 4� ,.�,,;,' � "� � �� ' �' ��': < , ��i,� �r3 (�`'''4._, i ..� �< � p,d � . d s t""' .�_ �� . � �°� ��3 � �,.� � `' ` � '$ , � r � � , �� ' � � d � � � 9 �. . . n: � � . a ,�,. �9 � r "e�� ` ,,, t � ,t < e , s �� +ti.,i. �. ,;�� ` � ,r .� '4i � - . .�,..-: , :��, ^e ..ww�� ..a.....+'�:a.,"'""'� r ._� � :+�+,:,� �.« '�� a. � ,.-"w` '� ^�► W �r"�� 3+�.,+��y,,:sE , �,,.*.� `-� � u� � ' ,. � ..:. � .... '� ^w�. <� -#�`� " a.. �.'� � � . '�;tm... : :, � �,.�..� . .�a+^�' -, wa��. _ g�, . � � ' � ..- �+ d ..� . . „. .� ^�'� ,u,�::a�s' ' . �.,.'.�+" *a.` . '.w�` !r w"�,.t �� .. .. . . . $ . � . - • ar. .. , . '�R� :: ' , . � avas.�.�- .,.. . . � � k. �,,, �� - ° - . - ..a,�" � +a. . ,s>',vre-�. . ..'r'"'.,s�,4e.+..'1;.� .. - -^c ...+wwc�`am. .,- . . > ; , �W �,,.: .rz 3^��P t .. �;�„. : � � `��s-��w ��` , �'' a�� ;� t � " �� t�� '� ��a�r�� c�� x�'.��'S�ia r �� * y'�� '`t �' ' "� `:��'� 3� �."`"�Y,,,x y �„�z��as.�.�� s �,r � ,r .. �-��;�q,..*�� `r,�y� ` :"� wa� „,� � 7;�.�^` i � ��. ,:�� ":� �� "� c�.s��-r�� t : ,.,� �� z;�� *x t�fiy�� ` . :: .. . . _ �.��«aA'i'�' an,s�'...b�' .. re-9 a'r��..3a.n. . . . � ,� .. s... CLFLWD Watershed Management Plan LE�t of Figures Figure 1. Project Locations in the Bone Lake Management District.....................................................62 Figure 2. Project Locations in the Little Comfort Lake Management District.......................................63 Figure 3. Project Locations in the Forest Lake Management District...................................................64 Figure 4. Project Locations in the Comfort Lake Management District................................................65 Figure 5. CLFLWD Lake Management Districts...................................................................................80 Figure 6. County and municipal boundaries of CLFLWD.....................................................................93 Figure7. CLFLWD topography.............................................................................................................99 Figure 8. CLFLWD geomorphology....................................................................................................100 Figure 9. CLFLWD soils by hydrologic group.....................................................................................103 Figure 10. The surficial geology of the CLFLWD................................................................................106 Figure 11. The bedrock geology of the CLFLWD...............................................................................107 Figure 12. CLFLWD surface waters and major subwatersheds.........................................................109 Figure 13. Minor Subwatersheds........................................................................................................110 Figure 14. DNR public waters.............................................................................................................112 Figure 15. District Streams.................................................................................................................113 Figure 16. Total phosphorus monitoring data for Bone Lake.............................................................117 Figure 17. Total phosphorus monitoring data of Shields Lake...........................................................121 Figure 18. Total phosphorus monitoring data for Little Comfort Lake................................................128 Figure 19. Total phosphorus monitoring data for Comfort Lake.........................................................131 Figure 20. Total phosphorus monitoring data for Moody Lake...........................................................136 Figure 21. Total phosphorus monitoring data for School Lake...........................................................139 Figure 22. CLFLWD national wetland inventory.................................................................................142 Figure 23. Wetland Quality Classification based on Minnesota Land Cover Classification System data...........................................................143 Figure 24. CLFLWD impaired waters.................................................................................................150 Figure 25. Presettlement Vegetation data for Washington and Chisago County...............................153 Figure 26. �andcover(MLCCS)data for CLFLWD.............................................................................154 Figure 27. Map of generalized groundwater contours for the Quaternary Water Table Aquifer........................................................................................158 Figure 28. Map of Water Appropriations, Source Water Assessments, and Well Protection Areas................................................................................................161 Figure 29. Groundwater Dependent Plant Communities....................................................................163 Figure 30. Monitoring sites within CLFLWD.......................................................................................168 Figure 31.Water quality grades of CLFLWD lakes............................................................................169 Figure 32. Percent of Watershed in each Land Use Category...........................................................171 Figure 33. CLFLWD Chisago County(1989) land use.......................................................................173 Figure 34. CLFLWD Washington County(2005)land use.................................................................174 Figure 35. Future(2020) land use within CLFLWD............................................................................175 Figure 36. CLFLWD Metropolitan Urban Service Area. .....................................................................176 Figure 37. Open spaces and recreational areas. ...............................................................................177 Figure 38. Minnesota County Biological Survey Sites........................................................................178 Figure 39. Permitted pollution sources...............................................................................................182 Figure 40. Environmental hazards......................................................................................................183 CLFLWD Watershed Management Plan List of Tabf�s Table1. Lake water quality goals...........................................................................................................9 Table 2. Implementation plan organization: categories and areas.......................................................20 Table 3. Capital Improvement Project Summary(all in 2010 dollars)..................................................75 Table 4.Areas of Lake Management Districts......................................................................................78 Table 5. Current Local Water Management Plan (LWMP)and Ordinance Status...............................81 Table 6. Local Plan Adoption Deadlines...............................................................................................82 Table 7. Goals for In-lake Water Quality and Phosphorus Load Reductions.......................................84 Table 8. 2000, 2020 and 2030 Populations by Municipality.................................................................94 Table 9. Monthly temperature and precipitation averages for the period from 1958 through 2009 at National Weather Service Station Number 212881 in Forest Lake, MN...................95 Table 10. Storm events and recurrence intervals.................................................................................95 Table 11. Impacts to Minnesota water resources as a result of climate change..................................97 Table 12. Soil classification................................................................................................................102 Table 13. CLFLWD lakes impaired for aquatic recreation"due to excess nutrients..........................148 Table 14. CLFLWD impaired watercourses........................................................................................149 Table 15. Existing 100-year Flood Elevations for District Lakes........................................................151 Table 15. Summary of lake monitoring through the Metropolitan Council's Citizen Assisted Lake Monitoring Program (CAMP)through 2009....................................167 Table 16. Summary of lake monitoring through the Chisago Volunteer Lake Monitoring Program. ...................................................................167 Table 18. Lake Watershed Land Use Summary.................................................................................171 Table 19. Status of local water plans..................................................................................................188 Table 20. Status of floodplain and shoreland ordinances. .................................................................189 .�. y� ._ . � ., , . ,. _ �_ .. - :� u��,��y - : x _ . . .. . < P--,+�----��-� - - _.. � �,,;, .�,._ , -- .�,�.. , u. ._. _ _,,,r,x,. � ��,.� � ,, - �- �,� .—,�, ,. ��;,�„�. _,� �„..� ,:�::: _ �_� .,M ... �..,� ,; s �,� � E �� ,� `.`R _. �� —�+�w�: r �'��— � r�:. {S.Y h H'�F �� a�''-1�`, � i� �� ... � ) u n � ,. � ' . f!, , d'� � d�'a'�j t �" ..��` � e j �,��,� � j � . ��"�6 �",R��dY s��« * _.� ��. �,q�rw t � � :*�'�b+/ i""�M•^ a{ ;., � "fi w"t � . � -y.� 4e:��t'�a'�'r� ��`-s � ';'�u# ��,,»✓� ��r .� �°• _ `�* i ,.. �wt"et «�� ..T'.� rr `,� �P .4-,�s.s��+ :.. �,��,��+� �j'q�.*� � � �.�f K m R}'a��..i 3. .�;'��`,,°,��r �` ,.�'4 � « �4 y�, �� a�p R j�"�;�.k h� �+ a1`•� +,�4�� "��,,��°��` ��,.�!.«�,(�,y��,`'�li�.�y�,C„�'9l��,�"- �:.� 7' e� 1 k�� "'� ;�..'� •��'.�!`,�+��1�,�+-.'' "�+ir. �`�; 'N''i�c�-,c��i.�,'�,'""`�"�' .1". . $'� r :- � +w, ,r�� „`�._y{.� "` 1, '"S"` ++: *�� ' ,�y�"� �»�'� 1 '7 s* .� s �..��r�;��'y'"��: -� �v � '. r �'� M� � . � . 3� �+ t ` + �',�.. � '' +� • � .��,,y� +:.;`#��1a��h.�� t��. ' �l:�y �� 4 w.1.r.J ' t�.�;{�j� ��:,� �w . �.L.`. a�-w• � i s: •» ��°�'�`' �"a�._,�+��.�'r.a .�r ""A 7,.:` '�, CLFLWD Watershed Management Plan List of Appendices Vaft�me 1 Appendix A: Non-Point Source Potlution Abatement Program Descriptions Appendix B: Sunrise River Water Quality and Flowage Project Petition Appendix C: Washington County Budget and Financial Policy#2403 Vofurr�e 2 Appendix D: Water Quality Data Summary Appendix E: Gaps Analysis CLFLWD Watershed Management Plan 1. EXECUT'IVE SUMMARY The Comfort Lake-Forest Lake Watershed District (CLFLWD) was created in 1999 to help solve and prevent water resource problems over a 49 square mile watershed encompassing drainage to Bone Lake, Forest Lake and Comfort Lake as well as drainage to a number of smaller lakes and streams. Drainage from Comfort Lake, the District's "outlet", enters the Sunrise River and ultimately drains to the St. Croix River. The District includes portions of the City of Wyoming, Chisago City,Chisago Lake Township, Franconia Township,the City of Forest Lake and the City of Scandia. The CLFLWD is governed by an appointed, five-member Board of Managers. The Mission of the District is to protect and improve its water resources through adaptive management approaches and education of local stakeholders. This Watershed Management Plan is intended to support that mission as a guide for the activities of the Comfort Lake-Forest Lake Watershed District through the year 2021. The Plan outlines the issues the District will address and establishes the goals, objectives and actions the District intends to use to tackle the identified issues over the next ten years. Local water management plan requirements are outlined and build on or bring together existing plans and programs of the municipalities. The Plan identifies eight major issue areas: Floodplain, Lakes, Streams, Wetlands, Upland Resources, Groundwater, Public Education, and Interagency Communication with goals focusing on the adaptive management of water and upland resources through District projects and programs and through education and coordination. • Floodplain goals including conserving flood storage capacity and limiting flood damage. • Lake goals include management to protect and improve water quality,to limit the spread and entry of invasive species, and the preservation of shoreline buffers. • Stream goals are similar and focus on managing stream water quality and habitat, aquatic invasive species management education, and the preservation and establishment of stream buffers. • Wetland goals address coordination with local governments to ensure no net loss, improving wetland habitat, research on phosphorus cycling in wetlands and the preservation and establishment of wetland buffers. • Upland Resources goals include improving the beneficial use of upland areas for stormwater management, maintaining and restoring uplands, and promoting uplands conservation. • Groundwater goals address the protection of groundwater quality and quantity and maintaining the function of groundwater-dependent natural resources. • Public Education goals address providing education and outreach services to the public to increase knowledge of and appreciation for the resources of the District and increasing stewardship and participation in District programs. • Interagency Communication goals focus on partnerships that ensure efficient and cost- effective use of funds for water resource management and coordination of efforts toward managing water resources. Programs and projects are outlined to address the identified issues and goals. The planned programs of the District are: District Rules and Rulemaking, Permitting, Monitoring & Data Assessment, Non-Point Source Pollution Abatement, Education and Outreach, Technical Resource Sharing and Interagency Communication, Research, and Measurement of Progress. Projects are outlined to address each of the issue areas and capital improvements are included where needed. The capital improvement projects implement methods to protect or improve the water quality of District lakes. CLFLWD Watershed Management Plan: Volume 1 ] Bone Lake(5222) A. (CIP) Bone Lake Inlet and Outlet Fish Barriers: Rough fish disturb the bottom sediments of lakes and can cause increases in the internal load of phosphorus in the lake when the fish are overly abundant. Bone Lake was identified as a lake with overabundant rough fish. To address the movement of rough fish into Bone Lake the District will install a fish barrier at the outlet of Bone Lake and at the inlet to Bone Lake from Moody Lake in order to limit the movement of carp within the Bone Lake system. The barrier at the lake outlet will limit the possibility of fish moving into the lake from the outlet stream and the barrier at the inlet from Moody Lake will limit the movement of carp into habitat areas in the wetland between Bone and Moody Lakes. The fish barriers are planned to use an innovative design that prevents fish passage upstream and downstream. The method is appropriate for low-gradient sites and includes the installation of draintile on the upstream side of a culvert. The project is expected to be funded through grants and supported by District funds. B. Bone Lake Infiltration Basin Planning and Design (SBL07 subwatershed): Plan and design an infiltration basin to provide volume reduction and water quality improvement for drainage through subwatershed SBL07. The likely site is east of the creek and along Oakhill Road North. The project would include diversion of flow to a constructed infiltration or water qualiry treatment basin. C. (CIP) Bone Lake Infiltration Basin Implementation (SBL07 subwatershed): Construct an infiltration basin to provide volume reduction and water quality improvement for drainage through Bone Lake subwatershed SBL07 based on the design developed (5222B). The faciliry will likely need to be located with private landowner participation. . D. Shoreline Survey: Conduct a shoreline survey to identify areas for improvements in shoreline buffers and lakescaping and to provide a means for documentation of changes in shoreline condition. The shoreline survey is planned to include photographs of the entire shoreline of the lake. The shoreline survey could also include more detailed analysis of shoreline properties including parcel specific soils and erosion evaluation or identification of key areas for protection or restoration. E. Curly-Leaf Pondweed Management: Manage curly-leaf pondweed in Bone Lake to reduce the internal phosphorus load. Curly-leaf pondweed will be managed, as allowed by DNR, through herbicide or harvesting treatments to limit the growth and decompostion of vegetation that results in an increase in the phosphorus load to the lake. F. Alum Treatment: Conduct alum or other in-lake treatment to reduce the internal load of Bone Lake. After stabilization of the rough fish (carp) population through harvesting (previously completed project and 5222G) and installation of fish bamers (5222A), the lake would be treated with alum or other in-lake treatment to reduce the release of phosphorus from lake bottom sediments. CLFLWD Watershed Management Plan: Volu�ne 1 41 � � G. Macrophyte & Invasives Survey: A survey of aquatic macrophytes will be conducted periodically on Bone Lake to track the balance of aquatic vegetation. Aquatic macrophytes provide a metric of lake health that supports the water quality data collected by the District. The intent is to conduct aquatic macrophyte surveys will be conducted every five years for the active recreation lakes of the District. The macrophyte survey will document the aquatic vegetation of the lake. In addition, an evaluation of the presence and extent of any invasive aquatic species will be conducted more frequently to be able to proactively manage invasive species and to track the effect of any aquatic invasive management conducted. Macrophyte surveys will be coordinated with the Department of Natural Resources. H. Rough Fish Management: Remove rough fish(carp)to limit resuspension of lake bottom materials and reduce internal phosphorus load in Bone Lake. Carp harvests will be conducted on the lake to decrease the carp population to a level that does not detrimentally impact the lake water quality. Carp management activities may be supported by the installation of a fish barrier through a separate proj ect. Birch Lake(5223) A. Phosphorus Source Assessment & Implementation Plan: Identify timing and location of any identified elevated phosphorus load to Birch Lake based on data collected in the tributary and wetlands between Bone Lake and Birch Lake (2003D). Identify sources of elevated phosphorus load in order to inform future implementation activities. School Lake(52241 No projects planned for School Lake drainage area at this time. Little Comfort Lake(5225) A. Phosphorus Source Assessment & Implementation Plan: Evaluate the change in phosphorus load between the School Lake outlet and the Little Comfort Lake inlet to identify the source of an estimated 200 pound increase in phosphorus load and identify methods to reduce the load. Analyze synoptic monitoring data collected along the stream between School Lake and Little Comfort Lake to identify phosphorus sources and sinks. B. Shoreline Survey: Conduct a shoreline survey to identify areas for improvements in shoreline buffers and lakescaping and to provide a means for documentation of future changes in shoreline condition. The shoreline survey is intended to include photographs of the entire shoreline of the lake. The shoreline survey could also include more detailed analysis of shoreline properties including parcel specific soils and erosion evaluation or identification of key areas for protection or restoration. C. Curly-Leaf Pondweed Management: Manage curly-leaf pondweed in Little Comfort Lake to reduce the internal phosphorus load. Curly-leaf pondweed will be managed, as allowed by DNR, through herbicide or harvesting treatments or other methods to limit the growth and decomposition of vegetation that results in an increase in the phosphorus load to the lake. CLFLWD Watershed Management Plan: Volume 1 42 , � the growth and decomposition of vegetation that results in an increase in the phosphorus load to the lake. D. Shoreline Survey: Conduct a shoreline survey to identify areas in need of improvements to shoreline buffers and lakescaping and to provide a means for documentation of future changes in shoreline condition. The shoreline survey is intended to include photographs of the entire shoreline of the lake. The shoreline survey could also include more detailed analysis of shoreline properties including parcel specific soils and erosion evaluation or identification of key areas for protection or restoration. E. Macrophyte & Invasives Survey: A survey of aquatic macrophytes will be conducted periodically on Shields Lake to track the balance of aquatic vegetation. Aquatic macrophytes provide a metric of lake health that supports the water quality data collected by the District. The intent is to conducet aquatic macrophyte surveys every five years for the active recreation lakes of the District. The macrophyte survey will document the aquatic vegetation of the lake. In addition, an evaluation of the presence and extent of any invasive aquatic species will be conducted more frequently to be able to proactively manage invasive species and to track the effect of any aquatic invasive management conducted. Macrophyte surveys will be coordinated with the Department of Natural Resources. Svlvan Lake(5227) A. Stormwater and Shoreline BMP Planning: Target the Sylvan Lake watershed for implementation of stormwater and shareline best management practices. Site and design raingardens, biofiltration basins, shoreline restoration and other best management practices to protect the high quality lake. B. (CIP) Stormwater and Shoreline BMP Implementation: Sylvan Lake is a high quality resource identified for protection of water quality. To protect water quality in Sylvan Lake, the CLFLWD plans installation of distributed stormwater best management practices in the Sylvan Lake watershed. The project would include the installation of raingardens, biofiltration, shoreline restoration and other practices in the Sylvan Lake watershed to provide stormwater treatment and encourage groundwater recharge to protect the high quality lake. C. Shoreline Survey: Conduct a shoreline survey to identify areas for improvements in shoreline buffers and lakescaping and to provide a means for documentation of changes in shoreline condition. The shoreline survey is intended to include photographs of the entire shoreline of the lake. The shoreline survey could also include more detailed analysis of shoreline properties including parcel specific soils, groundwater seeps, and/or erosion evaluation or identification of key areas for protection or restoration. D. Macrophyte & Invasives Surveys: A survey of aquatic macrophytes will be conducted periodically on Sylvan Lake to track the balance of aquatic vegetation. Aquatic macrophytes provide a metric of lake health that supports the water quality data collected by the District. Aquatic macrophyte surveys will be conducted every five years for the active recreation lakes of the District. The macrophyte survey will document the aquatic vegetation of the lake. In addition, an evaluation of the presence and extent of any invasive aquatic species will be CLFLWD Watershed Management Plan: Volume 1 44 conducted more frequently to be able to proactively manage invasive species and to track the effect of any aquatic invasive management conducted. Macrophyte surveys will be coordinated with the Department of Natural Resources. Forest Lake(52281 A. Diagnostic Study and Implementation Plan: Conduct a diagnostic study or submit current studies to be approved as a Diagnostic Study equivalent for the Forest Lake watershed and develop a detailed implementation plan for water quality protection. Funding can be sought through the MPCA's Clean Water Partnership program. B. (CIP) Forest Lake Diagnostic Study Implementation: Forest Lake generally has fairly good water quality,but can be impacted by activities and land management in its contributing watershed. The CLFWLD will implement the water quality protection measures as identified in the Forest Lake Diagnostic Study and Implementation Plan (5227A) to address the protection and improvement of water quality in Forest Lake. Measures implemented are likely to include a wide range of BMPs including buffers, agricultural land management practices, bioretention facilities,infiltration facilities, filtration features. C. Urban Stormwater Retrofit Planning and Design (FLO1 and FL81 subwatersheds): The more urbanized areas of the City of Forest Lake primarily developed at a time prior to the widespread installation of stormwater management features. Therefore, the drainage from these areas enters Forest Lake with little pre-treatment. This project will prepare a plan identifying locations for installation of a retrofit project that address untreated runoff entering Forest Lake from the urban portions of the City of Forest Lake. Retrofit projects will be evaluated in the subwatersheds FLO1 and FL81, which include the most urbanized areas draining to Forest Lake. Due to the nature of retrofits, private landowner participation may be necessary to implement some identified projects. Potential projects that are deemed feasible because of landowner cooperation and technical implementation potential will be designed for construction. D. (CIP) Urban Stormwater Retrofit Implementation (FLO1 and FL81 subwatersheds): Projects designed under the Urban Stormwater Retrofits Planning and Design Project (5227F) will be constructed. Retrofits may include a wide range of BMPs to improve water quality prior to entering Forest Lake, including raingardens, bioretention facilities, infiltration trenches, iron-enhanced filtration, biofiltration, tree boxes, stormwater capture and reuse, proprietary devices and a variety of other practices. E. Shoreline Survey: Conduct a shoreline survey to identify areas for improvements in shoreline buffers and lakescaping and to provide a means for documentation of future changes in shoreline condition. The shoreline survey is intended to include photographs of the entire shoreline of the lake. The shoreline survey could also include more detailed analysis of shoreline properties including parcel specific soils, groundwater seep locations, and/or erosion evaluation or identification of key areas for protection or restoration. F. Macrophyte & Invasives Survey: A survey of aquatic macrophytes will be conducted periodically on Forest Lake to track the balance of ayuatic vegetation. CLFLWD Watershed Management Plan: Volume 1 45 . � 8. INTERGOVERNMENTAL COORDINA710f� AND IMPACT 8.1. Locai Government �4genci�s 8.1.1 Roles The Comfort Lake-Forest Lake Watershed District works to ensure that its activities coordinate with and build on,but do not duplicate, those municipalities and counties present within the Watershed. One area of coordination is in the implementation of District Rules. The Rules focus on water and watershed management issues, but defer to existing municipal and state permitting and review processes where those processes meet the goals of the District. Therefore, municipalities and counties implement floodplain management standards where ordinances have been approved by the state and implement the Wetland Conservation Act. The MN Deparhnent of Natural Resources implements shoreline alterations standards and issues permits for activities below the ordinary high water level. Beyond direct stormwater management and water resource protection, municipalities and counties manage land use and a number of other types of infrastructure such as roadways, water treatment systems, and septic systems which can impact surface and groundwater resources as well. The municipality's local water plan will address the impact of these factors on local surface and groundwater resources. 8.1.2 Impact of Plan Local Plan Adoqtion Each municipaliry within the District is required to complete a local water management plan (LWMP) that conforms to Minnesota Statues 103B.235 and Minnesota Rules 8410.0160. The current status of LWMPs in each community within the District is summarized below: Table 5. Current Local Water Management Plan (LWMP)&Ordinance Status �. "o • . . . �. ` . e ' � r � �e t. c��.�,�.• a c Chisago No Plan State Approved State Approved City is City LGU Approved Chisago County Through County, Through County, County is LGU Lake Twp Plan State Approved State Approved Forest Lake Approved State Approved State Approved City is LGU Approved Franconia County Through County, Through County, County is LGU TWp Plan State Approved State Approved Scandia Approved State Approved State Approved City is LG U Wyoming No Plan State Approved State Approved City is LG U CLFLWD Watershed Management Plan: Volume 1 80 After adoption of this District Watershed Management Plan, municipalities are required to revise or prepare LWMPs in accordance with Minnesota Statues 103B.235 and Minnesota Rules 8410 that conform to this District Plan. Following BWSR approval and District Board's final adoption, the District will notify each municipality of the requirement to revise or prepare LWMPs that conform to this plan. In accordance with Minnesota Statues 103B and Minnesota Rules Chapter 8410.0160, municipalities will adopt LWMPs within two years of the Board of Water and Soil Resources' approval and the District's adoption of this plan . The City of Forest Lake and the City of Scandia are located within more than one watershed district. Therefore, these cities have to consider standards for multiple watershed organizations when developing LWMPs and official controls. The District understands the need to be sensitive to consistency and coordination with the adjacent watershed districts of Rice Creek and Carnelian Marine-St. Croix in implementation of watershed standards and projects while maintaining the integrity of District goals. The District will discuss with each municipality the options that address its circumstances and will collaboratively determine the most practical approach to meeting the requirements of this plan and Minnesota Rules Chapter 8410. Table 6 lists the municipalities within the CLFLWD and identifies the other watershed organizations within each municipality. The table provides the two year deadline for local plans and provides a recommended date for local plan adoption that would satisfy all watershed plans and therefore eliminate duplicative planning efforts. Table 6. Local Plan Adoption Deadlines - • � • � .. - . � . . . � - . . . - . • . e . . . . : . . . . . � . . . . • . . . . Chisago City CLFLWD Nov.2011 Nov.2013 Nov.2013 Chisago Lake CLFLWD Nov.2011 Nov.2013 Nov.2013 Twp Forest Lake CLFLWD Nov.2011 Nov.2013 �an.2012 RCWD Jan.2010 Jan.2012 Franconia CLFLWD Nov.2011 Nov.2013 Nov.2013 Twp CLFLWD Nov.2011 Nov.2013 Scandia CMSCWD Aug.2010 Aug.2012 Jan.2012 RCWD Jan.2010 Jan.2012 Wyoming CLFLWD Nov.2011 Nov.2013 Nov.2013 After the District approves a LWMP, the municipality shall adopt and implement the LWMP within l20 days and shall amend its official controls (ordinances, etc.) accordingly within 180 days. If a municipality later wishes to amend its plan, it must submit the proposed amendment to the District for review of consistency with the District's management plan. CLFLWD Watershed Management Plan: Volume 1 81 The District's requirements for LWMP content coincide with or add on to the requirements of Minnesota laws and rules. The District is especially interested in seeing that the LWMP include the identification of local problems and corrective actions that affect District concerns stated in this plan or require District collaboration. LWMPs may adopt by reference all or portions of the District Plan. In addition, the District has established to two sets of requirements for LWMPs: • Level 1— a list of LWMP requirements for all local units of government and are required whether or not all or parts of the District Plan are adopted by reference •Leve12— a list of LWMP, ordinance and official control requirements for local units of government that wish to assume sole permitting authority. If a local unit of government wishes to be the sole permitting authoriry (issue permits for activities regulated by the District's Rules in lieu of the District issuing these permits), the local unit of government must first prepare a LWMP, obtain District approval of the plan, and then adopt and enforce the appropriate ordinances consistent with or more stringent than District standards and rules. In this situation,the LWMP needs to meet additional requirements. The detailed requirements are described below. Level 1 Requirements for LWMP Content: All LWMPs must meet the requirements of Minnesota Statute 103B.235 and Minnesota Rule 8410.0160 except as addressed by adoption of the District's Plan by reference. All LWMPs, even those that adopt portions, or all, of the District's Plan by reference the LWMP must: 1. Include a map of stormsewer system. 2. Describe the existing and proposed land use. 3. Discuss how existing and proposed land uses support or impact water and natural resources. Municipalities are unique in their responsibility to regulate and manage land use. The LWMP provides an opportunity to consider any historical, current, ar future connections between land use and water and natural resources. 4. Include a listing of any impaired waters (as shown on the MPCA's 303(d) list) and approved TMDLs that are likely to result in wasteload or load allocations within the local unit of government's jurisdiction. The LWMP must describe the local unit of government's plan for implementing measures to address approved TMDLs and the municipality's allocated load. 5. Outline the implementation actions planned to address lake water quality and phosphorus reduction goals outlined in Table 7. NPDES MS4 permit communities must also integrate their Stormwater Pollution Prevention Program (SWPPP) policies, goals and actions into their LWMPs, in accordance with MPCA requirements and schedules. Anti-degradation requirements, policies, goals, and actions, must also be included, if applicable. CLFLWD Watershed Management Plan: Volume 1 82 Table 7. Goals for in-lake Water Quality and Phosphorus Load Reductions � i � � , r �f� � �: �,��_ ��'�.� 4 :i� r �� '4�_ ..a � � �:ii . . �.. 6. . -�, ��c� � � � �,�.��w ;�,�"u�� G� a„af¢ "`!��4� _�:;;��.:. rf_ a Y C M f `t t ,�t. o-r.�.;� cec - I1� �.�c ..tt , ,.�.�.lkck�� os, Moody Chisago La ke Twp 98% 60µg/I TP 40µg/I TP 144 Ib/yr 879 Ib/yr Scandia 2/o Bone Scandia 96% 0 40µg/I TP 40µg/I TP 669 Ib/yr 560 Ib/yr Chisago Lake Twp 4/o Scandia 53% Birch Chisago Lake Tw p 29% 60µg/I TP 60µg/I TP 471 Ib/yr 451 Ib/yr Chisago City 11 /o Forest Lake 7% Chisago City 82% School Forest Lake 10% 50µg/i TP 40µg/I TP 452 Ib/yr 476 Ib/yr Chisago Lake Twp 8% Little WYoming 46% Comfort Chisago City 41% 40µg/I TP 40µg/I TP 577 Ib/yr 678 Ib/yr Forest Lake 13% Shields Forest Lake 100% 100µg/I TP 60µg/I TP 195 Ib/yr 911 Ib/yr S Ivan Scandia 62% Y Forest Lake 38% 20µg/I TP 20µg/I TP 69 Ib/yr 0 Ib/yr Forest Lake 93% Forest Scandia 6% <40µg/1 TP <40µg/I TP 3,312 Ib/yr 153 Ib/yr Chisa o Cit 1% Heims Wyoming 100% 40µg/I TP 40µg/I TP NA NA Comfort Wyoming 63% 40µg/I TP 40µg/I TP 2,339 Ib/yr 127 Ib/yr �� # � .� .� a:. 4 For impaired lakes: Lake Total Phosphorus Assimilative Capacity and reduction from Comfort Lake-Forest Lake Watershed District Six Lakes Total Maximum Daily Load Study(MPCA,2010)or, for un-impaired lakes: Comfort Lake-Forest Lake Watershed District (CLFLWD). 2007a. Watershed and Lake Water Quality Modeling Investigation for the Development of a Watershed Capital Improvement Plan.Prepared by Wenck Associates,Inc. CLFLWD Watershed Management Plan: Volume 1 83 6. Describe the local unit of government's process which will be used to inform the District of requests for variances from municipal ordinances. The District will provide comment to the municipality on variance requests that appear likely to impact the water and natural resources of the District. 7. Outline the local unit of government's schedule for inspection, maintenance and repair of stormwater management systems including schedules for: - sweeping of public and private streets and parking lots, - inspecting stormwater outfalls, skimmers, sumps,and ponds,and - maintenance and repair programs for sto�nwater facilities and water control structures(e.g., cleaning catch basins,trash racks,pond excavation, facility repairs,etc.). 8. Summarize the municipality's spill containment and clean-up plans. Identify the status of septic systems (if any) and describe the regulatory tools in place, including local enforcement of existing local septic system ordinances, and whether ordinances are in conformance with the MPCA 7080 Rules and Metropolitan Council requirements. Far those communities that choose to adopt the District Plan by reference the items listed above can be provided to the District in memo form along with a letter that documents that the City 1. is adopting the District Plan by reference, and 2. indicates that it will not be seeking delegation of District permitting authority. Level 2 District Requirements for sole permitting authority: In addition to the requirements listed for Level 1, Municipalities desiring sole permitting authority must also address the following additional requirements: 1. The LWMP must describe the local unit of government's ordinances and specific regulatory provisions which are already in place and satisfy the District Rules . 2. The LWMP must describe any additional ordinances and regulatory provisions that need to be developed or revised to satisfy and incorporate the District standards and District Rules and regulations. 3. The LWMP must acknowledge and describe the respective roles of the District and the local unit of government in managing the water quality of the District-managed water bodies. 4. The LWMP must describe the local unit of government's permitting, inspection, and enforcement process(or proposed process)for land and water alteration work as related to activities regulated by the District Rules. This description should include outlining the process for: - Reviewing development and redevelopment proposals and permit applications - Review of preconstruction plans - Coordinating permit requests with other simultaneous reviewers - Coordinating timelines with other permitting agencies - Site inspections prior to project initiation, during construction,and after site stabilization. - Enforcement in cases on non-compliance. CLFLWD Watershed Management Plan: Volume 1 84 5. The applicable Municipal ordinances and local controls, including inspection and enforcement programs, must be reviewed and approved by the District prior to initiating sole permitting authority. In approving a Level 2 LWMP, the District may include reasonable conditions to ensure that regulatory oversight of potential water resource impacts is preserved at the same level as if the District were continuing to apply its rules in parallel with the local unit of government. For example,the District may reserve its authority to apply its permitting requirements to actions by state agencies, actions of the local unit itself, and in other respects where the local unit does not have the same authority as the District to provide regulatory oversight. The District also may prescribe reasonable reporting or review arrangements so that the District and the local unit can periodically review their mutual permitting activities with respect to water resources. Delegation of District permitting will be done through a formal agreement between the local governmental unit and the District, including a formal mechanism for the auditing of the local program, annual reporting, and enforcement of non-compliance after delegation takes place. Financial Impact The financial impact of this plan on local governments includes the development of or updates to a local water management plan as well as costs associated with assisting in the implementation of projects and programs outlined in this plan. Each of the municipalities within the District are required to update their local water plan within two years of adoption of this Plan. The cost for developing the local water plan can range from $15,000 to $100,000 depending on the level of detail. As identified in the implementation plan, the District intends to seek financial participation from its partners on projects of mutual benefit. The implementation plan identifies specific projects the District would consider implementing and the likely sources of funding. In some cases the District will fund the entire project and for others supplemental funding will be needed. The potential partners are also listed. The Plan identifies sources of outside funding which could come from the partner entities listed or from other funding sources such as grants. The District intends to seek funding for these projects from the municipalities and other loca] government units which will benefit from the project and will pursue outside funding sources such as grants to offset the expense. Numerous Federal and State funding opportunities exist to implement water quality improvement proj ects. CLFLWD Watershed Management Plan: Volume 1 85 Local Water Manapement Plan Approval and Amendments The Local Water Management Plan (LWMP) must be submitted for review and approval through the following process (103B.235). Amendments made to the LWMP after its approval by CLFLWD are reviewed and approved following this same process. • Each municipality will submit its LWMP to the CLFLWD for review and approval. Municipalities within Washington County will also submit their LWMP to the County and to the Metropolitan Council. Municipalities within Chisago County will submit their LWMP to the County if the County has completed a state-approved Groundwater Plan. • The County and Metropolitan Council will complete its review within 45 days and provide comments to CLFLWD on the consistency of the LWMP with the applicable County or Metropolitan Council plans. • The CLFLWD will complete its review and take action on the LWMP within 60 days unless an extension of the review period is agreed to by both parties. 8.2. State Government Agencies 8.2.1 Roles The state agencies that primarily interact with the CLFLWD on issues of water and natural resource management are the Minnesota Board of Water and Soil Resources, the Minnesota Department of Natural Resources, and the Minnesota Pollution Control Agency. The Board of Water and Soil Resources (BWSR) is the agency that oversees Watershed Districts and their activities. BWSR also oversees Soil and Water Conservation Districts, Watershed Management Organizations, and County Water Managers. Directly relevant to Watershed District activities, BWSR reviews and approves Watershed Management Plans, assists in administration of the Wetland Conservation Act, and administers a number of grant and easement programs. The Department of Natural Resources (DNR) manages a variety of natural resource and water-related concerns in Minnesota. Those DNR activities that relate most closely with the goals of the CLFLWD are: • collection of water resource-related data (e.g. fisheries, aquatic vegetation,surface and groundwater levels,stream flow) • oversight and issuance of pennits for shoreline standards and shoreline alterations, alterations in public waters and public wetlands, management of aquatic vegetation, and management of streams • establishment and review of floodplain standards • permits for surface-and ground-water use appropriations • native plant community and rare plant and animal data • fish stocking and fisheries management • providing lake accesses • wetland management and enforcement CLFLWD Watershed Management Plan: Volume 1 86 ; . . � _ ,•,,_ . ; :, , -.. �Ch►sag+c :� :i � � � t.. �c-ar�C� . - . � �> . . -�g.s � --..�,,._ __._�._ .... ;..� ,;_. :, i z.i�a � • � � �� .° �i•.s `�"� 1a ,j, .. � t, r: , � *F- ., �� ".,.^�3 � r�„ie� I �� .o k :��: .��a�r++a�`� , . . . .... 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':,ri_. . ��'�. ... , '., . ._ ,: .i � " .. .. „ , . ...:, - ' �� , "` _ "'�YYS�E�G�C�id'rL't1 : .. • i � �`4,� _ �� ....�^" � . '�' �f]llr�[Y5 va�"h , ; :� ��: � N " , --- �-'� ` '' ,�_� � '�� '#�''i"�':,.:�;.X-� �� r,.�*.5"�.. .��• ;.�.usi`_+u'�'��r1Xt�d:+'. �r._r C`:7'!t'�:t•' ... .. .�.`i I,r��:=$•:-r:�•� -- _ti_:Y-.�+`^ . .._... �r� �� - Figure 12. CLFLWD Surface Waters and Major Subwatersheds. B�N� LAKE WATERSHED SUMMARY Lake Statu� a �� r°�` i,�.. �� Overall Strategy: � "��:�� °�,� "`� �� Improve Water Quality . '' `�� " � Water Qualit Ratin �+��,�� ` ��' ��{ � Ratin C Secchi: 3.94 ft s�%��° °` ,:� : � � �.� � TP: 54 /L Chl-a: 30.1 /L , ��' ; � �.:�r�',�;.: : �'.��' � .,�'� Impairment:Aquatic��ecreation ; .�;,: . # due to nutrient/eutrophication biological indicators � ''�� " ", �, „� Water Quality Trend: �"'�',� .,�.�� • Secchi—No Trend; µ 4 �``'} � �" -+ _` � , TP—No Trend; �` *�'" '^ . �-�.:p �, . Chl-a- Improving '" �� .�� , .,t��. Shoreland Classification: �'-" `��'` Recreational Development Subwatershed Land Cover: 39% cropland, 15% wetlands, 13% grassland, 10% forest DNR ID 82005400 and 10% lake open water Lake Area 221 acres Subwatershed Area 5586 acres Resourc� Goals Outlet Elevation 907.3 ft. Short Term Goals—Year 2020 Low Water Level 906.70(1966) . Maintain a water quality rating of C. High Water Level 910.97 (1975) . Achieve a five-year mean summer phosphorus Ordinary High Water 909.10 ft concentration at or below 40µg/L±4%. 100-Yr. Flood Elev 911 (FEMA) . Maintain a mean summer secchi depth no less than 4 ft. Control Structures: 4 ft diameter culvert Long Range Goals -Year 2030 Greatest Depth 30 ft. • Maintain a water quality rating of C. Littoral Area 124 acres . Achieve a five-year mean summer phosphorus Public Access Sites 1 concentration at or below 40µg/L±4%. . Maintain a mean summer secchi depth no less than 4 ft. Fish Species: Walleye,Northern Pike,Sunfish (Bluegill,Hybrid,Pumpkinseed),Black Long Range Goals -Year 2040 Crappie,Largemouth Bass,White . Attain a water quality rating of B. Sucker,Common Carp,Golden Shiner, . Achieve a five-year mean summer phosphorus concentration at or below 30 µg/L±4%. Bowfin,Bullhead(Yellow,Black), Yellow Perch(2006) . Maintain a mean summer secchi depth no less than 7 ft. Aquatic Nuisance Species: Eurasian Milfoil Curlyleaf Pond Weed References: Water Monitoring Report(CLFLWD,2009) DNR Lake Finder MPCA Lake Water Quality Summary CLFLWD Six Lakes TMDL(2010) 2010 Comfort Lake Forest Lake Watershed Management Plan �v�ral6 ��sm�nt: �an� L.ak� t��r�t�r�t�ti�r� Bone Lake has a surface area of 221 acres, the third largest lake Planned/Potential Projects: in the District, and a watershed area of 5,586 acres. The . Phosphorus Source watershed to lake area ratio is fairly low at about 25:1. It is Subwatershed Studies considered a deep lake, but it exhibits some shallow lake • Shoreline Survey characteristics because 58% of it consists of littoral area. There • Curly-leaf Pondweed are seven lakes within the Bone Lake watershed. The main tributaries to Bone Lake are drainage from Moody Lake entering Management at the northwest side of Bone Lake, drainage from Third Lake . Alum Treatment entering at the northeast side of Bone Lake, and drainage from . Macrophyte&Invasives Survey the east and southeast portions of the watershed entering Bone • Rough Fish Management Lake at the southeast side. Drainage also enters at the southern end of the lake. Captial Improvement Projects: gone Lake has a public boat landing and is used recreationally • Fish Barriers for swimming, fishing, and motorized and non-motorized . Infiltration Basin in SBL07 boating. Subwatershed . Wetland Restoration in NBL14 Bone Lake was put on the 303(d)impaired waters list in 2004 for impairments to aquatic recreation as a result of Subwatershed nutrient/eutrophication biological indicators. Bone Lake is • Wetland Restoration in SBL38 eutrophic and monitoring data from the 1980s through today Subwatershed suggest that the water quality of the lake has been fairly consistent. A Total Maximum Daily Load study to address the impairment was submitted for EPA review in 2010. f�r��ect� 8� �rograr�s Ongoing ProgrBms: Past studies of Bone Lake focused on the lake's condition and . Monitoring watershed. The 2005 Bone Lake Management Plan recommended rough fish harvest, watershed rules, shoreline • Cost-Share Programs stabilization, a sediment basin with chemical treatment in the • Permitting Program Moody Lake watershed, alum h-eatment of the lake, and barley straw treatments for Bone Lake (North American Wetland . Education&Outreach Program Engineering,2005).A 2007 Lake Quality Investigation identified two wetland restorations at the southwest inlet to Bone Lake, an infiltration basin at the southeast inlet, and a wetland restoration at the north inlet to Bone Lake. The investigation revealed that biomass was evenly distributed among panfish, top predator and rough fish groups in last survey. The caip present in the lake were large, averaging approximately 8 pounds in last survey (CLFLWD,2007a). Water quality data suggest that Bone Lake's water quality has E �� _„ remained fairly constant over the past 10 years with some v ��,� ��'�,� , � fluctuation but no overall trend of increasing or decreasing water _��„ �'""" � -��',� qualit7. .,�,,� `, "*�,�,', -:.� �� .. �� » �"" �..�,..� ��: � � �,�� ,.� ' ��,'r�� -"�,. ��x �� " �� ,� ;� i�� i Y �'-" ryry, e�a . � ��t� � �f�.. .�,r # k�( {: �� :�,�S y�,. � '�':t °�� 7 ��,g� .�' �s."`�k�r � � � a ad � �'� , k"� �'75�v� �` � bP 4 {'R �� +�� . + .. ��}o- .... �� .�. 2010 Comfort Lake Forest Lake Watershed Management Plan SYLVAN LAKE WATERSHED MANAGEMENT PLAN Lake Status "�+� '� �'" � �� . .. Overall Strategy: �`', Y " " ��•� n � Maintain Water Quality ��' ,,, .� w,�` ,+�`„ �, ��'' s:��*;� , , �`.� Water Qualit Ratin : � � x' ° r `�; �:« � Ratin : A Secchi: 15.09 ft �• � � ' �' X TP: 21 /L Chl-a: 3.4 /L � ' �, � '' � ,.��" ` � � �. .,. f . y�i Impairment: Nonc� �t � � �� `^�F�� Y�-' �} S M� . Water Quality Trend: " Secchi—No Trend: �-��"' �� " �+�" � � '� •3 x,� ''� ``��. � � TP—No Trend; �� No Trend t°� �'.. ,'��*� . .. ,��ry,.�»': ,�a Shoreland Classification: � : 1. � I � Natural environment Subwatershed Land Cover: 20% wetlands, 19%medium-density residential, 19% DNR ID 82008000 cropland, 14% forest, I 1% grassland and Lake Area 84 acres 10% open water lake surface Subwatershed Area 3410 acres Outlet Elevation n/a Resource Goals Low Water Level 934.52 (1990) Short Term Goals—Year 2020 High Water Level 938.00 (2003) • Maintain a water quality rating of A. Ordinary High Water 937.1 . Maintain a five-year mean summer phosphorus 100-Yr. Flood Elev 939(FEMA) concentration at or below 20 µg/L±4%. Control Structures: None • Maintain a mean summer secchi depth no less than 10 ft. Greatest Depth 34 ft. Littoral Area 67 acres Long Range Goals -Year 2030 Public Access Sites None • Maintain a water quality rating of A. Fish Species: . Maintain a five-year mean summer phosphorus Sunfish(Bluegill,Hybrid,Pumpkinseed, concentration at or below 20 µg/L±4%. Green),Black Crappie,Largemouth . Maintain a mean summer secchi depth no less than 10 ft. Bass,Northern Pike,White Sucker, Bullhead(Black,Yellow)(1997) Long Range Goals -Year 2040 Aquatic Nuisance Species: . Maintain a water quality rating of A. Curlyleaf Pond Weed . Maintain a five-year mean summer phosphorus concentration at or below 20 µg/L±4%. ReferenCeS: Water Monitoring Report(CLFLWD,2009) . Maintain a mean summer secchi depth no less than 10 ft. DNR Lake Finder MPCA Lake Water Quality Summary 2010 Comfort Lake Forest Lake Watershed Management Plan Ov�rall �ss��sm�nf: Sylvar� Lak� �CF'�pf��t��4��t Sylvan Lake (formerly called HalfUreed Lake) is a deep lake Planned/Potential Projects: having some characteristics of a shallow lake with 68% . BMP and Shoreline Planning littoral area. It has a surface area of 84 acres and is landlocked for the back-to-back 100-year, 24-hour event. . Macrophyte&Invasives Survey There are rich fen floating mats south of the lake that have • Shoreline Survey been identified for preservation in past studies (CLFLWD, • Groundwater Protection 2007). Sylvan Lake is known for its excellent water quality. � Planning In 2009,it was one of the top 10 of 192 lakes in the twin cities metropolitan area graded in the Metropolitan Council's Captial Impr'ovement Projects: Citizen Assisted Lake Monitoring Program(CAMP) for water quality (CLFLWD, 2009). The lake likely maintains its high • Shoreline Improvements quality through relatively low volume and pollutant • BMP Installation concentrations from its drainage area and, possibly more • Implementation of Groundwater importantly,a high rate of exchange with groundwater. Protection Measures Sylvan Lake is not currently listed as impaired. The overall management for the lake and watershed is focused on �� '�� protection activities. Ongoing Programs: . Monitoring Early studies on Sylvan Lake focused on the lake's condition and watershed. A 1987 Diagnostic Study included • Cost-Share Programs management recommendations for maintaining Sylvan Lake • Permitting Program in its natural state at the 1987 phosphorus concentration of 27 . Education&Outreach Program µg�l. BMPs were recommended for development and agricultural areas. By a 1990 FLWMO study, the recommendation had changed to maintaining 20 µg/1 TP concentrations in Sylvan Lake. More recently, a 2007 water quality investigation identified watershed BMPs, groundwater recharge protection, land use management, and watershed rules for volume and pollutant control. The study found that panfish are abundant but top predatars account for majority of biomass, rough fish population has remained stable; carp have not been collected in survey, plant community is very diverse; submerged species for depths up to 18 feet, and that curly leaf pondweed is present but has not over taken desirable species. "�„'. , � .,,�` �'°'' �:. '`� � �«, s .�'� �� ' � �,,� " °�'� ;� r . ,�. . s ' �"'r., , ''r*�; „�, , � ; :a. � s�- �. � �r` a � � � �� ,� � M � r .. >�:'""'°; ., w 2010 Comfort Lake Forest Lake Watershed Management Plan