BONE LAKE MANAGEMENT DISTRICT (LMD) Description The Bone Lake Management District is located in the northeastern portion of the CLFLWD and is contained in the Chisago Lake Township, city of Scandia and a small portion of Franconia Township. The Bone LMD drainage area is 8,043 acres and discharges through Bone Lake to the Little Comfort LMD. A large expanse of wetland habitat surrounds the north and south end of Bone Lake and agricultural land uses (i.e. cultivated crops, pasture) make up almost two thirds of this LMD. The LMD is comprised of many natural environment and shallow lakes/wetlands, including Moody, First, Second, Third, Fourth, Lendt, Sea, and Second Lakes. Moody, Bone and Second Lakes are on the impaired waters list for nutrients/eutrophication. Most of the water courses are altered or have no definable channel. The near-surface materials have high pollution sensitivity along the east shore of Moody and Bone Lakes and to the south of Bone Lake. The southeasternmost corner of the LMD touches a well head protection area and a DWSMA with moderate vulnerability. There are several groundwater dependent natural resources, native plant communities, and rare animals in the LMD. Development Pressures The City of Scandia is located at the southeastern corner of the LMD and by 2040 is anticipating adding around 1,000 residents to their population and to increase employment 11% per decade. The City intends to protect the natural resources and agricultural core of the city by providing flexible density options for residential development around the village center, including conservation design or cluster design practices.

Issue Areas • (5100) Floodplains/Drainage Management – the drainage

system is highly altered with several small land locked areas andlakes that are susceptible to high water levels.

• (5200) Lakes – there are three lakes on the impaired waters listfor nutrients/eutrophication: Moody, Bone and Second Lakes.Within a 200 ft lake shoreline buffer, there has been forest canopycover loss of 12% on Bone Lake and 26% on Moody Lake since2001. Moody Lake has known populations of curly leafpondweed and carp. Bone Lake has known populations ofEurasian watermilfoil, curly leaf pondweed, carp and zebramussels.

• (5300) Streams – most of the watercourses are altered or have nodefinable channel.

• (5400) Wetlands – in 2016, there was 663 acres of wetland (or9% of the upland area)

• (5500) Upland Resources – in 2016, the uplands wereapproximately 18% forested/grassland, 66% cropland/hay, and6% developed. There are native plant communities south of BoneLake and east of Moody Lake.

• (5600) Groundwater- Quality: Areas of high pollution sensitivity along the east

shore of Moody and Bone Lakes and south of Bone lake.MDA has identified vulnerable groundwater areas that will besubject to Fall Fertilizer Restrictions between Moody andThird Lake, and along the eastern and southern border of theLake Management District.

- Quantity: the southern portion of the LMD designated as aCritical Groundwater Quality Impact Zone (high infiltrationpotential).

- Groundwater Dependent Natural Resources (GDNRs):Second Lake, Third Lake, Pine Lake, and the wetmeadow/shrub carr wetland extending south from Bone Lake.

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Priority Areas

First/Second Lakes • Impaired lake• GDNRs• Rare animals• State lands

Scandia DWSMA • Moderate DWSMA

vulnerability• Well head

protection area

Moody/Bone East Shore • Impaired lakes• GDNRs• Native plant community• High pollution sensitivity

of near-surface materials

Bone Lake South Wetland • Impaired lakes• GDNRs• Native plant community• High pollution sensitivity

of near-surface materials

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10-year Measurable Goals(5100) Floodplain

• Refer to District-wide goals

(5200) Lakes • Adaptively manage Moody, Bone and Second Lakes to reduce

phosphorus loads to achieve state water quality eutrophication standards (TP, Chl-a and Secchi) and remove from the impaired waters list

Lake Parameter

State Goals

2010 -2019

Average

Years of

Data Standard

Moody

TP (ug/L) 103 10 40

Chl-a (ug/L) 59 10 14

Secchi (ft) 2.5 10 4.6

Bone

TP (ug/L) 35 10 40

Chl-a (ug/L) 16 10 14

Secchi (ft) 4.7 10 4.6

Second

TP (ug/L) 23 1 60

Chl-a (ug/L) 8 1 20

Secchi (ft) 8.7 1 3.3

Lake

State Goals

Baseline Year(s)

Total TP Reduction

Needed (lb/yr)

2020 Remaining Reduction

(lb/yr)

Moody 2004 879 169

Bone 2004 560 0

Second 2002-2011 72 0

• Adaptively manage Moody and Bone Lakes to improve waterquality by achieving the 2040 TP and Secchi goals

Lake Parameter

Long-term District Goals

2015-2019

Average

Years of

Data 2020 Goal

2030 Goal

2040 Goal

Moody TP (ug/L) 93 5 60 40 40

Secchi (ft) 2.2 5 3.3 4.6 4.6

Bone TP (ug/L) 31 5 40 30 30

Secchi (ft) 5.1 5 4 7 7

Lake

Long-term District Goals

Baseline Year(s)

Total Reduction

Needed (lb/yr)

2020 Remaining Reduction

(lb/yr)

Moody 2004 879 169

Bone 2004 560 0

(5300) Streams • Refer to District-wide goals

(5400) Wetlands • Refer to District-wide goals

(5500) Uplands • Refer to District-wide goals

(5600) Groundwater • Refer to District-wide goals

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Project (5000-level) Implementation (5100) Floodplain Moody Lake (5121)

• 5121A (CIP) Floodplain Restoration Implementation: Implement floodplain restoration projects as identified through the District-wide the Climate Vulnerability Assessment, H&H model update scenarios, and coordination with other LGUs.

Bone Lake (5122) • 5122A (CIP) Floodplain Restoration Implementation:

Implement floodplain restoration projects as identified through the District-wide the Climate Vulnerability Assessment, H&H model update scenarios, and coordination with other LGUs.

(5200) Lakes Moody Lake (5221)

• 5221A (CIP) Moody Lake Diagnostic Study Implementation: The CLFLWD will implement the management activities as identified in the 2014 Moody Lake Diagnostic Study and Implementation Plan. Measures implemented will include a range of activities that address both the watershed and internal phosphorus loads. Subsequent phases of this project may include additional BMPs.

• 5221B Shoreland Inventory: Conduct a shoreland inventory 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.

Bone Lake (5222) • 5222A (CIP) Bone Lake Diagnostic Study Implementation:

The CLFLWD will implement the management activities as identified in the 2015 Bone Lake Diagnostic Study and Implementation Plan. Measures implemented will include a range of activities that address both the watershed and internal phosphorus loads. Subsequent phases of this project may include additional BMPs.

• 5222B Update Shoreland Inventory: Every 10 years the District will fully update its shoreland inventory of Bone Lake to evaluate the amount of change that has occurred and to identify areas for improvements in shoreline buffers and lakescaping. Minor updates to areas of concern may be made in the intervening years. A past shoreland inventory study was performed in 2013.

Secondary Lakes (5299) • 5299 Lake Studies: Collect lake information and develop

management plans for lakes in the District that have not been evaluated. Studies may entail bathymetric mapping, sediment composition mapping, fish and vegetation surveys, shoreland inventory, watershed assessment. If appropriate, a lake management plan will be developed based on lake water quality goals (developed as a part of the study through the public involvement process) and modeling of phosphorus-reduction scenarios. Ultimately, an implementation plan will identify specific activities, as well as appropriate responsible parties, necessary to meet the management objectives for the lake. These studies will incorporate available data and information acquired from past studies into the new investigations. In the Bone Lake Management District, the following lakes will be studied, First Lake, Second Lake, Third Lake, Fourth Lake, Lendt Lake, Sea Lake, and potentially German Lake, pending a boundary review.

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(5300) Rivers/Streams Bone Lake (5322)

• 5322A Stream Sediment Diagnostic Study: Performdiagnostic monitoring to identify stream sediment loadingproblem areas.

• 5322B Stream Sediment Implementation: Implement targetedto reduce stream sediment loading.

(5400) Wetlands Moody Lake (5421)

• 5421A (CIP) Wetland Restoration Implementation:Implement wetland restoration projects as identified throughthe District-wide wetland surveys, assessments andinventories.

Bone Lake (5422) • 5422A (CIP) Wetland Restoration Implementation: In 2016

the CLFLWD used the 2015 Bone Lake Diagnostic Study and2014 Partially Drained Wetland Assessment to identifyphosphorus loading sources and potential wetland restorationswithin the Bone Lake watershed to benefit in-lake waterquality. Under implementation item 5420A ComprehensiveWetland Inventory. The CLFLWD will implement wetlandrestorations in the Bone Lake watershed to improvedownstream in-lake water quality, increase floodplain storageand improve wildlife habitat.

(5500) Uplands • See District-wide Program (3000-level) and Project (5000-

level) Implementation

(5600) Groundwater • See District-wide Program (3000-level) and Project (5000-

level) Implementation

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LITTLE COMFORT LK MGMT DISTRICT (LMD) Description The Little Comfort Lake Management District is located in the southern portion of the CLFLWD and is contained in the City of Wyoming, City of Forest Lake, Chisago City, City of Scandia, and the Chisago Lake Township. The Little Comfort LMD drainage area is 4,209 acres and discharges through Little Comfort Lake to the Comfort LMD. Agricultural land uses (i.e. cultivated crops, pasture) make up almost half of this LMD. The LMD is comprised of two natural environment and shallow lakes/wetlands, Birch Lake and School Lake. School Lake and Little Comfort Lake are on the impaired waters list for nutrients/eutrophication and three reaches of the Bone-Birch-School-Little Comfort (BBSLC) Tributary are impaired for Escherichia coli. Most of the water courses are altered or have no definable channel. The near-surface materials have high pollution sensitivity along the south border of South Lake and Birch Lake. There are a few groundwater dependent natural resources, native plant communities, and rare animals in the LMD. Development Pressures The City of Forest Lake is located on the west side of the LMD and by 2040 is anticipating a 15% per decade growth rate in population, adding over 7,000 residents to their population and almost 5,000 new housing units. The City intends to protect the vulnerable natural resources in the city by zoning those regions as “Conservancy” on the north and south side of the City. This zoning category includes portions of the community that are particularly environmentally sensitive and include large contiguous wetland areas. The City of Wyoming’s comprehensive plan is still underway and should be complete by 2021.

Issue Areas • (5100) Floodplains/Drainage Management – the drainage

system is highly altered.• (5200) Lakes – there are two lakes on the impaired waters list for

nutrients/eutrophication: School Lake and Little Comfort Lake.Within a 200 ft lake shoreline buffer, there has been forest canopycover loss of 24% on Little Comfort Lake since 2001. LittleComfort Lake has known populations of curly leaf pondweed.

• (5300) Streams – There are two reaches of natural streamchannel, which make up portions of the BBSLC Tributarybetween School and Little Comfort Lake. The other watercoursesare either altered or have no definable channel. Three reaches ofthe BBSLC Tributary are on the impaired waters list for E. coli.

• (5400) Wetlands – in 2016, there was 875 acres of wetland (or22% of the upland area)

• (5500) Upland Resources – in 2016, the uplands wereapproximately 26% forested/grassland, 43% cropland/hay, and8% developed. There are native plant communities south of LittleComfort Lake and north of Nielson Lake.

• (5600) Groundwater- Quality: Areas of high pollution sensitivity along the south

border, beneath School Lake and Birch Lake. MDA hasidentified vulnerable groundwater areas that will be subject toFall Fertilizer Restrictions in the section southwest of SchoolLake.

- Quantity: the southern portion of the LMD designated as aCritical Groundwater Quality Impact Zone (high infiltrationpotential).

- Groundwater Dependent Natural Resources (GDNRs): Wetmeadow/shrub carr wetland in the southwest corner.

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Priority Areas

Heath Avenue Drainage • Impaired lake• Altered watercourses• High pollution sensitivity

of near-surface materials• Wetlands / Biodiversity

School Lake • Impaired lake• Altered watercourses• High pollution sensitivity of

near-surface materials• Wetlands / Biodiversity

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10-year Measurable Goals(5100) Floodplain

• Refer to District-wide goals

(5200) Lakes • Adaptively manage Birch, School and Little Comfort Lakes

to reduce phosphorus loads to achieve state water qualityeutrophication standards (TP, Chl-a and Secchi) and removefrom the impaired waters list

Lake Parameter

State Goals

2010 -2019

Average

Years of

Data Standard

Birch

TP (ug/L) 97 2 60

Chl-a (ug/L) 18 2 20

Secchi (ft) 4.2 2 3.3

School

TP (ug/L) 52 2 60

Chl-a (ug/L) 41 2 20

Secchi (ft) 2.7 2 3.3

Little Comfort

TP (ug/L) 56 10 40

Chl-a (ug/L) 21 10 14

Secchi (ft) 4.7 10 4.6

Lake

State Goals

Baseline Year(s)

Total TP Reduction

Needed (lb/yr)

2020 Remaining Reduction

(lb/yr)

Birch 2010 451 323

School 2004 477 0

Little Comfort 2004 559 559

• Adaptively manage District lakes to improve water quality byachieving the 2040 TP and Secchi goals

Lake Parameter

Long-term District Goals

2015-2019

Average

Years of

Data 2020 Goal

2030 Goal

2040 Goal

Birch TP (ug/L) 97 2 60 60 60

Secchi (ft) 4.2 2 3.3 3.3 3.3

School TP (ug/L) 52 2 50 40 40

Secchi (ft) 2.7 2 4 4.6 4.6

Little Comfort

TP (ug/L) 61 5 40 40 30

Secchi (ft) 4.1 5 5 5 7

Lake

Long-term District Goals

Baseline Year(s)

Total TP Reduction

Needed (lb/yr)

2020 Remaining Reduction

(lb/yr)

Birch 2010 451 323

School 2004 477 0

Little Comfort 2004 559 559

(5300) Streams • Adaptively manage District streams to achieve annual flow-

weighted mean concentrations less than the Ecoregionstandard of 30 mg/L: Little Comfort Inlet at Itasca Avenue hasTSS FWMC ranging from 3-159 mg/L since 2004, with yearsabove 30 mg/L in 2004-2006 and 2019.

(5400) Wetlands • Refer to District-wide goals

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(5500) Uplands • Refer to District-wide goals

(5600) Groundwater • Refer to District-wide goals

Project (5000-level) Implementation (5100) Floodplain Birch Lake (5123)

• 5123A (CIP) Floodplain Restoration Implementation:Implement floodplain restoration projects as identifiedthrough the District-wide the Climate VulnerabilityAssessment, H&H model update scenarios, and coordinationwith other LGUs.

School Lake (5124) • 5124A (CIP) Floodplain Restoration Implementation:

Implement floodplain restoration projects as identifiedthrough the District-wide the Climate VulnerabilityAssessment, H&H model update scenarios, and coordinationwith other LGUs.

Little Comfort Lake (5125) • 5125A (CIP) Floodplain Restoration Implementation:

Implement floodplain restoration projects as identifiedthrough the District-wide the Climate VulnerabilityAssessment, H&H model update scenarios, and coordinationwith other LGUs.

(5200) Lakes Birch Lake (5223)

• 5223A Internal Load Assessment: Perform an internal loadassessment on Birch Lake to determine management options.

• 5223B Internal Load Management: Conduct alum or other in-lake treatment to reduce internal load of Birch Lake. This willoccur after implementation of watershed load reductionprojects or demonstration that watershed load is at or belowgoal level.

School Lake (5224) • 5224A (CIP) July Avenue Implementation: Through

diagnostic monitoring the District identified high phosphorusloading from the area around July Avenue in the School Lakewatershed. Phosphorus reduction measures will likely includeagricultural BMPs.

• 5224B Internal Load Assessment: Perform an internal loadassessment on School Lake to determine managementoptions.

• 5224C Internal Load Management: Conduct alum or other in-lake treatment to reduce internal load of School Lake. Thiswill occur after implementation of watershed load reductionprojects or demonstration that watershed load is at or belowgoal level.

Little Comfort Lake (5225) • 5225A Heath Avenue Implementation: Through diagnostic

monitoring the District identified high phosphorus loadingfrom the area around Heath Avenue in the Little Comfort Lakewatershed. Phosphorus reduction measures will likely includewater impoundment and bioretention.

• 5225B Internal Load Assessment: Perform an internal loadassessment on Little Comfort Lake to determine managementoptions.

• 5225C Internal Load Management: Conduct alum or other in-lake treatment to reduce internal load of Little Comfort Lake.This will occur after implementation of watershed loadreduction projects or demonstration that watershed load is ator below goal level.

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• 5225D Update Shoreland Inventory: Every 10 years theDistrict will fully update its shoreland inventory of LittleComfort Lake to evaluate the amount of change that hasoccurred and to identify areas for improvements in shorelinebuffers and lakescaping. Minor updates to areas of concernmay be made in the intervening years. A past shorelandinventory study was performed in 2015.

Secondary Lakes (5299) • 5299 Lake Studies: Collect lake information and develop

management plans for lakes in the District that have not beenevaluated. Studies may entail bathymetric mapping, sedimentcomposition mapping, fish and vegetation surveys, shorelandinventory, watershed assessment. If appropriate, a lakemanagement plan will be developed based on lake waterquality goals (developed as a part of the study through thepublic involvement process) and modeling of phosphorus-reduction scenarios. Ultimately, an implementation plan willidentify specific activities, as well as appropriate responsibleparties, necessary to meet the management objectives for thelake. These studies will incorporate available data andinformation acquired from past studies into the newinvestigations. In the Little Comfort Lake ManagementDistrict, the Nielsen Lake will be studied.

(5300) Rivers/Streams Bone-Birch-School-Little Comfort Tributary (5341)

• 5341A Stream Sediment Diagnostic Study: Performdiagnostic monitoring to identify stream sediment loadingproblem areas.

• 5341B Stream Sediment Implementation: Implement targetedto reduce stream sediment loading.

• 5341C (CIP) School-Little Comfort Tributary StreamRestoration: Restore natural channel downstream of School

Lake to provide water quality and habitat benefits. The project may include installation of beaver dam analogs to slow flow, restoration of vegetation to channel banks, and implementation of stream habitat features such as large woody debris.

• 5341D (CIP) Buffer Restoration: The District will prioritizefield and stream buffer restoration projects utilizing theAgricultural Conservation Planning Framework and datafrom the Stream Assessment (5341A).

(5400) Wetlands Birch Lake (5423)

• 5423A (CIP) Wetland Restoration Implementation:Implement wetland restoration projects as identified throughthe District-wide wetland surveys, assessments andinventories.

School Lake (5424) • 5424A (CIP) Wetland Restoration Implementation:

Implement wetland restoration projects as identified throughthe District-wide wetland surveys, assessments andinventories.

Little Comfort Lake (5425) • 5425A (CIP) Wetland Restoration Implementation:

Implement wetland restoration projects as identified throughthe District-wide wetland surveys, assessments andinventories.

(5500) Uplands • See District-wide Program (3000-level) and Project (5000-

level) Implementation.

(5600) Groundwater • See District-wide Program (3000-level) and Project (5000-

level) Implementation.

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FOREST LAKE MANAGEMENT DISTRICT (LMD) Description The Forest Lake Management District is located in the southern portion of the CLFLWD and is contained in the City of Forest Lake, City of Scandia, and Chisago City. The Forest LMD drainage area is 11,301 acres and discharges through Forest Lake to the Sunrise River. A large expanse of wetland habitat surrounds the north and south end of Forest Lake. The LMD is comprised of many natural environment and shallow lakes/wetlands, including Shields, Cranberry, Twin, Elwell, Manning, and Nielson Lakes. Shields Lake is on the impaired waters list for nutrients/eutrophication. All of the water courses are either altered or have no definable channel. The near-surface materials have high pollution sensitivity in the southeastern corner, near Keewahtin Lake. The northwesternmost corner of the LMD touches a well head protection area. There are several groundwater dependent natural resources, native plant communities, and rare animals in the LMD, particularly in the north central and south central regions. Development Pressures The City of Forest Lake is located on the west side of the LMD and by 2040 is anticipating a 15% per decade growth rate in population, adding over 7,000 residents to their population and almost 5,000 new housing units. The City intends to protect the vulnerable natural resources in the city by zoning those regions as “Conservancy” on the north and south side of the City. This zoning category includes portions of the community that are particularly environmentally sensitive and include large contiguous wetland areas.

Issue Areas • (5100) Floodplains/Drainage Management – the drainage

system is highly altered. • (5200) Lakes – Shields Lake is on the impaired waters list for

nutrients/eutrophication. Within a 200 ft lake shoreline buffer, there has been forest canopy cover loss of 24% on Forest Lake and 20% on Keewahtin Lake since 2001. Forest Lake has known populations of Eurasian watermilfoil, curly leaf pondweed, zebra mussels, and flowering rush. Shields Lake has known populations of curly leaf pondweed and carp. Keewahtin Lake has known populations of purple loosestrife

• (5300) Streams – all of the watercourses are altered or have no definable channel.

• (5400) Wetlands – in 2016, there was 1,520 acres of wetland (or 17% of the upland area)

• (5500) Upland Resources – in 2016, the uplands were approximately 29% forested/grassland, 30% cropland/hay, and 22% developed. There are native plant communities to the north and south of Forest Lake.

• (5600) Groundwater - Quality: Areas of high pollution sensitivity in the southeast

corner, surrounding Keewahtin Lake. MDA has identified vulnerable groundwater areas that will be subject to Fall Fertilizer Restrictions north and south of the eastern lobe of Forest Lake and in the drainage area to Keewahtin Lake.

- Quantity: the southern portion of Forest Lake and along northern edge of the LMD designated as a Critical Groundwater Quality Impact Zone (high infiltration potential), high recharge areas east of Keewahtin Lake and around Forest Lake identified by USGS.

- Groundwater Dependent Natural Resources (GDNRs): Forest Lake, Keewahtin Lake, a large expanse of wet meadow/shrub carr wetlands extending north from Forest Lake, and a region of forested wetlands to the south of Forest Lake.

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Priority Areas

Forest Lake Corridors • DNR Lands • Native Plant Communities

/ Wetlands / GDNRs • Highest Phosphorus

Sensitivity Lake • Altered Watercourses

Keewahtin Lake • High Pollution Sensitivity

of Near-Surface Materials • GNDRs • High Phosphorus

Sensitivity Lake

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10-year Measurable Goals

(5100) Floodplain • Refer to District-wide goals

(5200) Lakes • Adaptively manage Shields Lake to reduce phosphorus loads

to achieve state water quality eutrophication standards (TP, Chl-a and Secchi) and remove from the impaired waters list

Lake Parameter

State Goals

2010 -2019

Average

Years of

Data Standard

Shields

TP (ug/L) 212 8 60

Chl-a (ug/L) 50 8 20

Secchi (ft) 2.9 8 3.3

Lake

State Goals

Baseline Year(s)

Total TP Reduction

Needed (lb/yr)

2020 Remaining Reduction

(lb/yr)

Shields 2015 1,023 0

• Adaptively manage District lakes to improve water quality by

achieving the 2040 TP and Secchi goals

Lake Parameter

Long-term District Goals

2015-2019

Average

Years of

Data 2020 Goal

2030 Goal

2040 Goal

Forest TP (ug/L) 36 5 37 33 30

Lake Parameter

Long-term District Goals

2015-2019

Average

Years of

Data 2020 Goal

2030 Goal

2040 Goal

Secchi (ft) 6.5 5 5 6 7

Shields TP (ug/L) 208 5 100 60 60

Secchi (ft) 2.3 5 4.26 4.26 4.26

Keewahtin TP (ug/L) 16 4 20 20 20

Secchi (ft) 13.8 4 10 10 10

Lake

Long-term District Goals

Baseline Year(s)

Total TP Reduction

Needed (lb/yr)

2020 Remaining Reduction

(lb/yr)

Forest 2016 929 213

Shields 2015 1,023 0

Keewahtin n/a n/a n/a

(5300) Streams • Refer to District-wide goals

(5400) Wetlands • Refer to District-wide goals

(5500) Uplands • Refer to District-wide goals

(5600) Groundwater • Refer to District-wide goals

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Project (5000-level) Implementation See Project Issues Overview for District-wide implementation activities.

(5100) Floodplain Shields Lake (5126)

• 5126A (CIP) Floodplain Restoration Implementation: Implement floodplain restoration projects as identified through the District-wide the Climate Vulnerability Assessment, H&H model update scenarios, and coordination with other LGUs.

Lake Keewahtin (5127) • 5127A (CIP) Floodplain Restoration Implementation:

Implement floodplain restoration projects as identified through the District-wide the Climate Vulnerability Assessment, H&H model update scenarios, and coordination with other LGUs.

Forest Lake (5128) • 5128A (CIP) Floodplain Restoration Implementation:

Implement floodplain restoration projects as identified through the District-wide the Climate Vulnerability Assessment, H&H model update scenarios, and coordination with other LGUs. The Washington Judicial Ditch 6 corridor is a target area for implementation.

(5200) Lakes Shields Lake (5226)

• 5226A (CIP) Shields Lake Diagnostic Study Implementation: The CLFLWD will implement the management activities as identified in the 2016 Shields Lake Diagnostic Study. Measures implemented will include a range of activities that

address both the watershed and internal phosphorus loads. Subsequent phases of this project may include additional BMPs.

• 5226B Shoreland Inventory: Conduct a shoreland inventory 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.

Lake Keewahtin (5227) • 5227A Lake Keewahtin Diagnostic Study: Conduct a

diagnostic study or submit current studies to be approved as a Diagnostic Study equivalent for the Lake Keewahtin watershed and develop a detailed implementation plan for water quality protection.

• 5227B (CIP) Lake Keewahtin Diagnostic Study Implementation: Lake Keewahtin is a high quality resource identified for protection of water quality. To protect water quality in Lake Keewahtin, the CLFLWD plans installation of distributed stormwater best management practices in the Lake Keewahtin watershed. Implementation measures may include the raingardens, biofiltration facilities, shoreline restoration and other practices to provide stormwater treatment and encourage groundwater recharge to protect the high quality lake.

• 5227C Update Shoreland Inventory: Every 10 years the District will fully update its shoreland inventory of Lake Keewahtin to evaluate the amount of change that has occurred and to identify areas for improvements in shoreline buffers and lakescaping. Minor updates to areas of concern may be

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made in the intervening years. A past shoreland inventory study was performed in 2016.

Forest Lake (5228) • 5228A (CIP) Washington Judicial Ditch 6 Subwatershed

Implementation: The CLFLWD will implement water quality protection measures as identified in the 2018 Washington Judicial Ditch 6 Assessment and Feasibility Study. Implementation measures may include bioretention facilities, infiltration facilities, filtration features, and agricultural best management practices.

• 5228B (CIP) Castlewood East Subwatershed Implementation: The CLFLWD will implement water quality protection measures as identified in the 2019 Castlewood East Assessment and Feasibility Study. Implementation measures may include agricultural best management practices, wetland restoration, pond cleanout, bioretention facilities, infiltration facilities, and filtration features.

• 5228C (CIP) Hayward Avenue Subwatershed Implementation: The CLFLWD will implement water quality protection measures as identified in the 2019 Hayward Avenue Assessment and Feasibility Study. Implementation measures may include ditch checks, wetland restoration/enhancement, stormwater retrofits, bioretention facilities, infiltration facilities, filtration features, and agricultural best management practices.

• 5228D (CIP) Direct Drainage Implementation: The CLFLWD will implement water quality protection measures within Forest Lake’s direct drainage area as identified in the 2018 Forest Lake Diagnostic Study and Implementation Plan, 2016 Forest Lake North Subwatershed Assessment, and 2014 Forest Lake South Subwatershed Assessment. Implementation measures may include shoreline restorations, buffers, stormwater retrofits, bioretention facilities, infiltration facilities, and filtration features.

• 5228E Update Shoreland Inventory: Every 10 years the District will fully update its shoreland inventory of Forest Lake to evaluate the amount of change that has occurred and to identify areas for improvements in shoreline buffers and lakescaping. Minor updates to areas of concern may be made in the intervening years. A past shoreland inventory study was performed in 2013, and a photo inventory was taken in 2015.

Secondary Lakes (5299) • 5299 Lake Studies: Collect lake information and develop

management plans for lakes in the District that have not been evaluated. Studies may entail bathymetric mapping, sediment composition mapping, fish and vegetation surveys, shoreland inventory, watershed assessment. If appropriate, a lake management plan will be developed based on lake water quality goals (developed as a part of the study through the public involvement process) and modeling of phosphorus-reduction scenarios. Ultimately, an implementation plan will identify specific activities, as well as appropriate responsible parties, necessary to meet the management objectives for the lake. These studies will incorporate available data and information acquired from past studies into the new investigations. In the Forest Lake Management District, the following lakes will be studied, Clear Lake, Twin Lake, Cranberry Lake, and Elwell Lake.

(5300) Rivers/Streams Washington Judicial Ditch 6 (5342)

• 5342A (CIP) Washington Judicial Ditch 6 Improvements: The CLFLWD will implement stream improvement measures as identified in the 2018 Washington Judicial Ditch 6 Assessment and Feasibility Study. Implementation measures may include ditch abandonment, wetland restorations, streambank restorations, and buffers.

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(5400) Wetlands Shields Lake (5426)

• 5426A (CIP) Wetland Restoration Implementation:Implement wetland restoration projects as identified throughthe District-wide wetland surveys, assessments andinventories.

Lake Keewahtin (5427) • 5427A (CIP) Wetland Restoration Implementation:

Implement wetland restoration projects as identified throughthe District-wide wetland surveys, assessments andinventories.

Forest Lake (5428) • 5428A (CIP) Wetland Restoration Implementation:

Implement wetland restoration projects as identified throughthe District-wide wetland surveys, assessments andinventories.

(5500) Uplands Forest Lake (5528)

• 5528A (CIP) Greenway Corridor: The District will work incooperation with state agencies and LGUs to restore andprotect a greenway corridor in the WJD-6 subwatershed toprovide benefits to downstream water resources.Implementation measures may include pervious surfaceprotection, habitat restoration, and informational signage.Land acquisition will be pursued under the (3012) LandAcquisition & Management Program.

(5600) Groundwater Lake Keewahtin (5627)

• 5627A Groundwater Recharge Protection Feasibility Study:Groundwater interactions are the largest components of LakeKeewahtin’s water budget. Lake Keewahtin does not have asurface discharge. Excess inflow is lost to groundwater and

evaporation. A feasibility study will identify the types of groundwater protection measures that can be implemented around Lake Keewahtin and the benefits of these measures. The study will also evaluate historic lake levels, groundwater levels, and historic photographs to increase the understanding of the interaction between lake levels and groundwater levels in Lake Keewahtin.

• 5627B (CIP) Groundwater Recharge ProtectionImplementation: In order to sustain healthy groundwaterinteractions with Lake Keewahtin, the groundwater protectionmeasures identified through the feasibility study (5627A) willbe implemented around Lake Keewahtin to protect the lake’sinteraction with groundwater and to protect the lake’s waterquality. Implementation measures may include infiltrationfeatures, pollution prevention practices, and protection ofpervious surfaces.

Forest Lake (5628) • 5628A Groundwater Dependent Natural Resource

Interpretive Feature Feasibility Design and Planning (FL44subwatershed): Groundwater dependent wetlands are uniqueresources within CLFLWD that can be highlighted as an assetto the community. This project will evaluate the feasibilityand design an interpretive trail or overlook along thegroundwater-dependent FL44 subwatershed wetland toprovide educational access to the resource and to provideinformation on the characteristics of this groundwater-dependent resource. Locations on existing public land will beevaluated and the project will be planned in cooperation withlandowners.

• 5628B Groundwater Dependent Natural ResourceInterpretive Feature Implementation (FL44 subwatershed):Implement an interpretive trail or overlook along thegroundwater-dependent FL44 subwatershed wetland toprovide education about the characteristics of thisgroundwater-dependent resource as guided by the design andplanning efforts (5628A).

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COMFORT LAKE MGMT DISTRICT (LMD) Description The Comfort Lake Management District is located in the northwest portion of the CLFLWD and is contained in the City of Wyoming, City of Forest Lake, and a small portion of Chisago City. The Comfort LMD drainage area is 5,234 acres and is the District’s “outlet”, via Sunrise River. A large amount of developed land is located in the southern portion of this LMD, encompassing the jurisdiction of Forest Lake along with major roadways (I35, HWY 8, HWY 61). Many wetlands and forested land are also located in this region. Agricultural land uses (i.e. cultivated crops, hay, pasture) makeup a large portion of the northeastern portion of the LMD. The Comfort LMD comprises the headwaters of Sunrise River, stretching from the outlet of Forest Lake to Comfort Lake and out. There is one recreational development lake (Heims Lake) and one general development lake (Comfort Lake). Comfort Lake is on the impaired waters list for nutrients/eutrophication along with a reach of JD2 for chloride and two reaches of the Sunrise River, one for E. coli and the other for MIBI, FIBI, and DO. Most of the water courses are altered or have no definable channel, aside from the natural stream channel at the outlet of Comfort Lake. The near-surface materials have high pollution sensitivity in most of the southern half of the LMD. The southeasternmost corner of the LMD includes portions of the City of Forest Lake wellhead protection area and the northern border touches the Wyoming wellhead protection area. There are several groundwater dependent natural resources, native plant communities, and rare animals in the LMD. Development Pressures The City of Forest Lake is located at the southern half of the LMD and by 2040 is anticipating a 15% per decade growth rate in population,

adding over 7,000 residents to their population and almost 5,000 new housing units. The transportation infrastructure along Highway 8 and Interstate 35 are expected to expand to account for increased capacity. The City of Wyoming’s comprehensive plan is still underway and should be complete by 2021. Issue Areas • (5100) Floodplains/Drainage Management – the drainage

system is highly altered, particularly along Sunrise river. • (5200) Lakes – Comfort Lake is on the impaired waters list for

nutrients/eutrophication. Within a 200 ft lake shoreline buffer, there has been forest canopy cover loss of 14% on Comfort Lake since 2001. Comfort Lake has known populations of Eurasian watermilfoil, curly leaf pondweed, and zebra mussels.

• (5300) Streams – the outlet of Comfort Lake is a natural stream channel, and all of the other watercourses are altered or have no definable channel. The former Judicial Ditch 2 is on the impaired waters list for chloride and two reaches of the Sunrise River are on the impaired waters list for E. coli, macroinvertebrate bioassessments, fish bioassessments, and DO.

• (5400) Wetlands – in 2016, there was 1,564 acres of wetland (or 33% of the upland area)

• (5500) Upland Resources – in 2016, the uplands were approximately 16% forested/grassland, 22% cropland/hay, and 29% developed. There are a few native plant communities scattered around the LMD, with one site of biodiversity south of Comfort Lake now developed.

• (5600) Groundwater - Quality: A large area of high pollution sensitivity making up

most of the southern half of the LMD. MDA has identified vulnerable groundwater areas that will be subject to Fall Fertilizer Restrictions west of the Sunrise River.

- Quantity: the southern portion of the LMD designated as a Critical Groundwater Quality Impact Zone (high infiltration

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potential) and multiple high recharge areas identified by USGS.

- Groundwater Dependent Natural Resources (GDNRs): There are few native plant communities connected with groundwater. Sunrise River is hydrologically connected to the outwash aquifer.

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Priority Areas

Sunrise River Corridor • Impaired lake• Altered watercourses• Wetlands

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10-year Measurable Goals (5100) Floodplain

• Refer to District-wide goals

(5200) Lakes • Adaptively manage Comfort Lake to reduce phosphorus loads

to achieve state water quality eutrophication standards (TP, Chl-a and Secchi) and remove from the impaired waters list

Lake Parameter

State Goals

2010 -2019

Average

Years of

Data Standard

Comfort

TP (ug/L) 33 10 40

Chl-a (ug/L) 16 10 14

Secchi (ft) 5.4 10 4.6

Lake

State Goals

Baseline Year(s)

Total TP Reduction

Needed (lb/yr)

2020 Remaining Reduction

(lb/yr)

Comfort 2004 127 0

• Adaptively manage District lakes to improve water quality by

achieving the 2040 TP and Secchi goals

Lake Parameter

Long-term District Goals

2015-2019

Average

Years of

Data 2020 Goal

2030 Goal

2040 Goal

Comfort TP (ug/L) 31 5 40 33 30

Secchi (ft) 6.0 5 5 5 7

Lake

Long-term District Goals

Baseline Year(s)

Total TP Reduction

Needed (lb/yr)

2020 Remaining Reduction

(lb/yr)

Comfort 2020 394 116

(5300) Rivers/Streams

• Adaptively manage District streams to achieve no net increase in stream chloride flow-weighted mean concentrations:

o Existing data show elevated chloride concentrations in JD2, headwaters to county-line (07030005-525) which is currently on the impaired waters list.

• Adaptively manage District streams to achieve annual flow-weighted mean concentrations less than the Ecoregion standard of 30 mg/L:

o Several stations along the Sunrise River between Forest Lake and Comfort Lake exhibit a wide range of TSS FWMCs, with a few occasions of TSS FWMCs exceeding 30 mg/L: Heims Lake Drainage Ditch had TSS FWMC

of 40-146 mg/L in 2012-2014 Bixby Park, County Line Ditch and

Greenway Avenue had peak TSS FWMCs in 2012 of 368 mg/L, 62, and 439 mg/L, respectively.

(5400) Wetlands • Refer to District-wide goals

(5500) Uplands • Refer to District-wide goals

(5600) Groundwater • Refer to District-wide goals

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Project (5000-level) Implementation (5100) Floodplain Comfort Lake (5129)

• 5129A (CIP) Floodplain Restoration Implementation: Implement floodplain restoration projects as identified through the District-wide the Climate Vulnerability Assessment, H&H model update scenarios, and coordination with other LGUs.

(5200) Lakes Comfort Lake (5229)

• 5229A (CIP) Sunrise River Water Quality/Quantity Regional Stormwater Project: The District evaluated feasible project options in the Sunrise River drainage area to reduce phosphorus loads to Comfort Lake through the 2012 Engineer’s Report: Sunrise River Water Quality & Flowage Project. This project was initiated by petition of Chisago County (Appendix X). The District will implement projects in accordance with the study and petition. Implementation measures may include urban retrofits, wetland restoration, ponding, filtration, biofiltration, or other methods to reduce phosphorus loads. Target sites identified through the study include Bixby Park (wetland restoration completed in 2016), District Tax Forfeit Project, Wyoming Wetland Enhancement, Shallow Pond, and enhancements to the Sunrise River itself.

• 5229B Update Shoreland Inventory: Every 10 years the District will fully update its shoreland inventory of Comfort Lake to evaluate the amount of change that has occurred and to identify areas for improvements in shoreline buffers and lakescaping. Minor updates to areas of concern may be made in the intervening years. Past shoreland inventory studies were performed in 1998 and 2014, and a photo inventory was taken in 2016.

Secondary Lakes (5299) • 5299 Lake Studies: Collect lake information and develop

management plans for lakes in the District that have not been evaluated. Studies may entail bathymetric mapping, sediment composition mapping, fish and vegetation surveys, shoreland inventory, watershed assessment. If appropriate, a lake management plan will be developed based on lake water quality goals (developed as a part of the study through the public involvement process) and modeling of phosphorus-reduction scenarios. Ultimately, an implementation plan will identify specific activities, as well as appropriate responsible parties, necessary to meet the management objectives for the lake. These studies will incorporate available data and information acquired from past studies into the new investigations. In the Comfort Lake Management District, Ashton Lake will be studied. The District completed the 2016 Heims Lake Water Quality Study and Management Plan.

(5300) Rivers/Streams Sunrise River (5340)

• 5340A Stream Sediment Diagnostic Study: Perform diagnostic monitoring to identify stream sediment loading problem areas.

• 5340B Stream Sediment Implementation: Implement targeted to reduce stream sediment loading.

• 5340C (CIP) Buffer Restoration: The District will prioritize field and stream buffer restoration projects utilizing the Agricultural Conservation Planning Framework and data from the Stream Assessment (5340A).

(5400) Wetlands Comfort Lake (5429)

• 5429A (CIP) Wetland Restoration Implementation: Implement wetland restoration projects as identified through the District-wide wetland surveys, assessments and

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inventories as well as through the 2012 Engineer’s Report: Sunrise River Water Quality & Flowage Project.

(5500) Uplands Forest Lake (5529)

• 5529A (CIP) Greenway Corridor: The District will work incooperation with state agencies and LGUs to restore andprotect a greenway corridor in the Comfort Lakesubwatershed to provide benefits to downstream waterresources. Implementation measures may include pervioussurface protection, habitat restoration, and informationalsignage. Land acquisition will be pursued under the (3012)Land Acquisition & Management Program.

(5600) Groundwater • See District-wide Program (3000-level) and Project (5000-

level) Implementation

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