2010 clean water act reporting cycle lake/wetland ... · pdf file2010 clean water act...

2010 Clean Water Act Reporting Cycle Lake/Wetland Assessment Transparency

Documentation

wq-iw12-01-10

of 132

This memo addresses lakes assessed for aquatic recreation use and wetlands assessed for aquatic life use.

Lakes assessed for aquatic recreation use [303(d) level assessment] require the following minimum data requirements: Eight water quality samples of total phosphorus, chlorophyll-a corrected for pheophytin-a, and Secchi disk depth Samples must be collected between June and September to be included in analysis Samples must be collected over a minimum of two years

Lake Preliminary Assessment Summary String:

= total phosphorus in ug/L = chlorophyll-a in ug/L = Secchi transparency in meters

Wetlands assessed for aquatic life use [303(d) level assessment] must meet the following criteria: Either the plant or invertebrate index of biological integrity (IBI) score falls below the established impairment threshold for the ecoregion The impaired wetland is hydrologically connected (perennial or intermittent) to a downstream 303(d) impaired lake, wetland, or stream There is reasonable potential that the cause of the hydrologically connected impairments is interrelated

Wetland Preliminary Assessment Summary String:

*Only pertains to invertebrate IBI; methods for invertebrate data collection include: Dipnet Composite (dipnet activity trap sampling combined)

(Parameter Mean/Standard Error/count of samples)

(IBI Type-Method*:IBI Score)

PC

S

l

l

l

l

l

l

of 132

Basin:

Assessment Cycle: 2010

Island

31-0913

ITASCA

Northern Lakes and Forests

090300062934.263

37

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:

Lake/Wetland Assessment Transparency Documentation

Lake Reservoir/Lake

TP and chl-a exceed the standard; Secchi is within the standard. A closer look at the data reveals that 5 mid-late summer sampling events over 2006 and 2008 had quite high TP and chl-a pairings with low Secchi. Recommend a nonsupport for aquatic recreation use.

Use Support

Comments

Aquatic Recreation Use Support (ARUS): Aquatic Life Use Support (ALUS):

Aquatic Consumption Use Support (ACUS):

Not Support Not Assessed

Not Assessed

Final Assessments

ARUS

Preliminary AssessmentsSummary String

(P 37/ +-4.6/ 17) (C 18.1/ +-4.0/ 17) (S 2.6/ +-0.1/ 95) (Color 15)

P=phosphorus (ug/L), C=chlorophyll-a (ug/L), S=Secchi (m)(Parameter Mean/+- Standard Error/Count)

Ecoregion Type TP (ug/L) Chl-a (ug/L) Secchi (m)

Lake ARUS Criteria:

NLF Lake Trout < 12 < 3 > 4.8

NLF Stream Trout < 20 < 6 > 2.5

NLF Lake/Reservoir < 30 < 9 > 2.0

NCHF Stream Trout < 20 < 6 > 2.5

NCHF Lake/Reservoir < 40 < 14 > 1.4

NCHF Shallow Lake/Reservoir < 60 < 20 > 1.0

WCBP & NGP Lake/Reservoir < 65 < 22 > 0.9

WCBP & NGP Shallow Lake/Reservoir < 90 < 30 > 0.7

of 132

Basin:

Assessment Cycle: 2010

Echo

69-0615

ST LOUIS


090300021123.93

10

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Shallow Lake/Reservoir

TP, chl-a, and Secchi all indicate non support. Color averaged 140 Pt-Co units and TSS and VSS were 5 mg/L and 2.5 mg/L respectively. Both likely contributed to reduced Secchi transparency.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 42/ +-2.2/ 8) (C 10.7/ +-2.6/ 8) (S 1.0/ +-0.0/ 8) (Color 170)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Des Moines

2010

Talcot

17-0060

COTTONWOOD

Western Corn Belt Plains

07100001849.538

5.5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Exceeds all parameters at shallow lake standards. Measurable Microcystin values on all sampling dates in 2007 at mid-lake site (.18 to 5.6 ug/L).

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 483/ +-81.5/ 8) (C 220.1/ +-28.6/ 8) (S 0.2/ +-0.0/ 8) (Color 25)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Des Moines

2010

Flahtery

32-0045

JACKSON


07100001417.042

6

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Basin greatly exceeds standards for shallow lakes based on all parameters.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 190/ +-14.9/ 18) (C 104.7/ +-11.9/ 17) (S 0.4/ +-0.1/ 18)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Des Moines

2010

Yankton

42-0047

LYON

Northern Glaciated Plains

07100001396.376Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Lake was originally reviewed for assessment with data from 8/30/07 from a targeted algal bloom sample. This data should have been excluded from the assessment. The revised data is as follows:

TP = 109 ug/LChl-a= 51.5 ug/LSecchi= 0.32 m

The lake exceeds standards for all parameters based on this revised dataset.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 154/ +-16.6/ 13) (C 116.9/ +-63.9/ 12) (S 0.3/ +-0.0/ 16) (Color 18)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Des Moines

2010

Okamanpeedan

46-0051

MARTIN


071000032159.803

6.5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Iowa has completed a TMDL for turbidity and excess algae in 2005 on Okamanpeedan. The lake greatly exceeds shallow lake nutrient standards in place in MN.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 224/ +-22.2/ 26) (C 129.3/ +-14.4/ 29) (S 0.3/ +-0.0/ 30)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Des Moines

2010

Lime

51-0024

MURRAY


07100001318.071

6.5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 227/ +-13.1/ 9) (C 233.9/ +-16.0/ 9) (S 0.2/ +-0.0/ 7) (Color 24)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Des Moines

2010

Bloody

51-0040

MURRAY


07100001261.086

11

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 105/ +-8.9/ 8) (C 65.4/ +-11.1/ 8) (S 0.6/ +-0.0/ 137) (Color 14)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Horseshoe

40-0001

LE SUEUR

North Central Hardwoods

07040002415.263

26

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi greatly exceed both the deep and shallow nutrient standards for this ecoregion. DNR staff provided depth and littoral information and indicated that the lake stratifies during the summer months. With greater than 80% littoral area it is recommended that the lake be listed as impaired based on the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 88/ +-4.6/ 15) (C 68.5/ +-6.3/ 15) (S 0.6/ +-0.1/ 16)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Sunfish

40-0009

LE SUEUR


07040002123.119

30

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 63/ +-5.9/ 12) (C 34.3/ +-4.2/ 12) (S 0.8/ +-0.0/ 12)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Dora

40-0010

LE SUEUR


07040002711.605

6

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



All parameters greatly exceed the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 350/ +-62.2/ 11) (C 41.9/ +-14.1/ 11) (S 0.9/ +-0.1/ 11)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Mabel

40-0011

LE SUEUR


0704000298.088Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and chl-a exceed both the deep and shallow lake nutrient standards; Secchi exceeds the deep lake standards. Requests have been made to area DNR offices for depth and littoral area information on these basins. At this time, it is recommended the lake be listed as impaired based on the shallow lake standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 111/ +-11.9/ 12) (C 81.9/ +-12.8/ 11) (S 1.2/ +-0.4/ 12)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Sabre

40-0014

LE SUEUR


07040002250.291

13

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and chl-a exceed the shallow lake standards. Secchi is within the standard. The Cannon River flows through the lake.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 1165/ +-111.5/ 16) (C 26.4/ +-6.8/ 16) (S 1.3/ +-0.2/ 16)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Gorman

40-0032

LE SUEUR


07040002504.627

14

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and chl-a exceed the standard. Secchi is within the standard. Cannon River flows through the lake.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 1115/ +-98.6/ 16) (C 29.3/ +-5.3/ 16) (S 1.1/ +-0.1/ 38)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Tustin

40-0061

LE SUEUR


07040002101.657

4

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 178/ +-25.5/ 11) (C 78.1/ +-27.1/ 11) (S 0.9/ +-0.1/ 10)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Wells

66-0010

RICE


07040002665.767

5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 338/ +-43.4/ 12) (C 71.3/ +-16.3/ 11) (S 0.7/ +-0.0/ 58) (Color 30)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Fox

66-0029

RICE


07040002306.351

47

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP and chl-a exceed the deep lake nutrient criteria; Secchi is within the standard.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 88/ +-15.1/ 17) (C 30.8/ +-4.1/ 16) (S 1.5/ +-0.1/ 151)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

French

66-0038

RICE


07040002872.797

56

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

All parameters exceed the deep lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 150/ +-22.1/ 10) (C 77.2/ +-13.2/ 10) (S 1.1/ +-0.1/ 57) (Color 20)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Lower Sakatah

66-0044

RICE


07040002359.277

7

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and chl-a greatly exceed the shallow lakes nutrient standards; Secchi is at the standard.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 453/ +-49.8/ 16) (C 65.3/ +-11.1/ 16) (S 1.0/ +-0.1/ 63) (Color 43)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Hunt

66-0047

RICE


07040002174.062

27

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and chl-a greatly exceed the shallow lake nutrient standards; Secchi is just above the standard. With 84% littoral area, it is recommended that the lake be held to the shallow lake nutrient standard.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 91/ +-9.9/ 10) (C 60.5/ +-9.6/ 10) (S 1.0/ +-0.2/ 26)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Rice

66-0048

RICE


07040002314.157

5.5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi all exceed the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 466/ +-56.2/ 10) (C 35.4/ +-22.0/ 11) (S 1.0/ +-0.1/ 10)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Caron

66-0050

RICE


07040002311.676

4

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi all greatly exceed the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 353/ +-34.9/ 14) (C 107.3/ +-22.3/ 10) (S 0.5/ +-0.1/ 14)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Cedar

66-0052

RICE


07040002878.723

42

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi exceed both deep and shallow lake nutrient standards. With a maximum depth of 42 feet and a littoral area of 73% it is recommended that the lake be held to the deep lake standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 67/ +-7.4/ 19) (C 38.2/ +-5.0/ 19) (S 1.0/ +-0.0/ 110) (Color 20)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Shields

66-0055

RICE


07040002932.293

38

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all exceed the deep lake standards and all but Secchi exceed the shallow lake standards. With a maximum depth of 38 feet and littoral area of 73%, it is recommended the lake be held to the deep lake standard.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 302/ +-33.0/ 13) (C 63.2/ +-16.3/ 13) (S 1.1/ +-0.1/ 60)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Lower Mississippi

2010

Loon

81-0015

WASECA


07040002122.449

8

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 223/ +-30.6/ 12) (C 57.6/ +-9.5/ 12) (S 0.7/ +-0.0/ 61) (Color 30)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Madison

07-0044

BLUE EARTH


070200111389.103

59

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all exceed the nutrient standards for lakes.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 79/ +-3.2/ 9) (C 42.9/ +-3.5/ 9) (S 1.0/ +-0.1/ 42)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Eagle (North)

07-0060-01

BLUE EARTH


07020011467.355

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 170/ +-12.2/ 10) (C 76.3/ +-6.9/ 10) (S 0.3/ +-0.0/ 9)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Loon

07-0096

BLUE EARTH


07020007781.958

7

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



All parameters exceed thresholds. List as nonsupport based on shallow lake standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 124/ +-9.6/ 17) (C 67.6/ +-2.8/ 17) (S 0.3/ +-0.0/ 30)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Susan

10-0013

CARVER


0702001282.102

17

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and chl-a greatly exceed the shallow lake nutrient standards. Secchi is just within the standard. Secchi TSI value is inconsistent with TP and chl-a TSI values and suggests less eutrophic conditions. Recommend listing the lake.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 252/ +-168.7/ 22) (C 52.1/ +-6.1/ 33) (S 1.0/ +-0.1/ 22)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Unnamed

12-0013

CHIPPEWA


0702000453

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Wetland

This wetland is located within Franko Wildlife Management Area approximately 2 miles west of Clara City, MN. Biologists sampling this wetland have noted the presence of carp and a dense mat of filamentous algae coating the water surface. Water exits this wetland to the southeast and flows through a ditch approximately 0.5 miles to Hawk Creek, a stream on the impaired waters list for turbidity.

The MPCA monitored this wetland in 2002 and 2003 with both plant and macroinvertebrate IBIs indicating that it was not supporting the aquatic life designated use. Water levels were lower in 2003 compared to 2002 and yet IBI scores did not vary much between these two years.

Use Support

Comments



Not Assessed Not Supporting

Not Assessed

Final Assessments

ALUS


Invert IBI(Composite): NS-24/ NS-21 Plant IBI: NS-13/ NS-16

*Methods for invertebrate data collection include: Dipnet & Composite (dipnet & activity trap sampling combined)

IBI Type (Method*): IBI Score1 / IBI Score2

Ecoregion Plant IBI Composite Dipnet (DN)

Macroinvertebrate IBIWetland ALUS Criteria:

NCHF > 42 > 49 > 47

WCBP & NGP > 51 > 59 > 56

of 132

Basin:

Assessment Cycle:

Minnesota

2010

Bingham

17-0007

COTTONWOOD


07020010265.332

9

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and Secchi exceed standards. Chlorophyll-a has a range of 110 ppb - highly variable under a variety of TP conditions (91 ppb to 294 ppb).

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 202/ +-24.7/ 8) (C 25.6/ +-12.9/ 8) (S 0.6/ +-0.0/ 147) (Color 15)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Eagle

17-0020

COTTONWOOD


07020010104.58

8

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



All parameters exceed shallow lakes standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 154/ +-10.8/ 8) (C 95.8/ +-27.4/ 8) (S 0.4/ +-0.1/ 7)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Bean

17-0054

COTTONWOOD


07020008122.769

12

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Original assessment data included Microcystin sampling from targeted near-shore locations. This data should have been excluded from the calculations. The revised TP, chl-a, and Secchi values are as follows:

TP=113 ug/LChl-a=55.9 ug/LSecchi=0.49 m

Based on this revised assessment, the lake exceeds the shallow lake standards for all parameters.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 122/ +-13.1/ 8) (C 66.3/ +-9.0/ 8) (S 0.5/ +-0.1/ 7)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Double (North Portion)

17-0056-01

COTTONWOOD


07020008128.241

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Waterbody exceeds shallow lake standards for all parameters.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 158/ +-19.4/ 8) (C 74.1/ +-17.5/ 8) (S 0.5/ +-0.1/ 7)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Augusta

19-0081

DAKOTA


0702001233.314

33

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi greatly exceed the deep lake ecoregion standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 180/ +-29.9/ 13) (C 58.7/ +-9.4/ 13) (S 0.3/ +-0.0/ 29)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Christina

21-0375

DOUGLAS


070200023954.609

14.5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi all exceed the nutrient standards for shallow lakes. This basin is heavily managed by DNR for waterfowl production and is known to switch between a clear and turbid state (high year to year variation in water quality). As the basin is connected to Anka Lake (21-0353-00) it is recommended that the lakes be addressed together.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 77/ +-5.1/ 36) (C 33.8/ +-1.2/ 37) (S 0.6/ +-0.1/ 35)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Unnamed PCA site #382

21-0692

Douglas


070200050

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Wetland

This wetland is located approximately 4 mi northeast of Kensington, MN near the west margin of Freeborn Lake. The amount of sediment and runoff received from the adjacent field is likely extensive given the slope of the land, the lack of a vegetated upland buffer, and the presence of swales/ditches shunting runoff into this wetland. The unnamed creek (07020005-901) flowing from this wetland into Freeborn Lake is on the 303(d) Impaired Waters List because it is not supporting its Aquatic Life designated use based on an assessment of turbidity. The MPCA Biological Monitoring Unit collected data from this wetland in 2007. Both plant and macroinvertebrate IBIs indicate that this wetland is not supporting its aquatic life designated use.

Use Support

Comments




Not Assessed

Final Assessments

ALUS


Invert IBI(Dipnet): NS-46 Plant IBI: NS-14





NCHF > 42 > 49 > 47

WCBP & NGP > 51 > 59 > 56

of 132

Basin:

Assessment Cycle:

Minnesota

2010

Wing

27-0091

HENNEPIN


0702001211.963

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and chl-a exceed the shallow lake nutrient standards while Secchi is at the standard. Volunteers indicate the lake is 2.1 meters deep; aerial photography shows a large fringe of emergent vegetation extending into the open water. Recommend listing the lake based on the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 95/ +-7.9/ 26) (C 41.5/ +-5.4/ 43) (S 1.0/ +-0.1/ 26)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Rose

27-0092

HENNEPIN


0702001222.567

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



All parameters exceed nutrient standards for shallow lakes. Volunteers report a maximum depth of 4.6 meters; aerial photography shows a large emergent fringe extending into the waterbody. It is likely the basin is predominantly shallow with a small deep hole (high littoral area). Recommend listing the basin based on the shallow nutrient criteria.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 101/ +-12.5/ 23) (C 62.6/ +-10.0/ 38) (S 0.9/ +-0.1/ 22)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Ringo

34-0172

KANDIYOHI


07020004675.808

7

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi greatly exceed the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 107/ +-7.8/ 12) (C 52.2/ +-5.0/ 12) (S 0.3/ +-0.0/ 23) (Color 20)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Dead Coon (Main Lake)

41-0021-01

LINCOLN


07020006536.614

9

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Exceeds shallow lake standards for all parameters.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 195/ +-32.4/ 8) (C 40.0/ +-17.2/ 8) (S 0.5/ +-0.0/ 44) (Color 23)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Hendricks

41-0110

LINCOLN


070200031530.263

8

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and chl-a exceed the ecoregion standard for shallow lakes.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 149/ +-13.0/ 11) (C 33.3/ +-6.7/ 11) (S 1.1/ +-0.1/ 22)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Unnamed

41-0128

LINCOLN


0702000620

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Wetland

This wetland is located approximately 3 miles north of Tyler, MN. This depressional wetland represents the headwaters of a small intermittent tributary to Coon Creek (07020006-511) which is currently on the Impaired Waters List because it is not supporting its aquatic life designated use based on an assessment of the fish community. The distance from this wetland to Coon Creek is about 1 mile.

This wetland was monitored in 2003 as part of the Redwood Watershed Depressional Wetland study. Both plant and macroinvertebrate IBIs indicate that this wetland is not supporting its aquatic life designated use.

Use Support

Comments




Not Assessed

Final Assessments

ALUS


Invert IBI(Composite): NS-35 Plant IBI: NS-16





NCHF > 42 > 49 > 47

WCBP & NGP > 51 > 59 > 56

of 132

Basin:

Assessment Cycle:

Minnesota

2010

School Grove

42-0002

LYON


07020006337.565

11

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 105/ +-11.3/ 8) (C 43.2/ +-5.8/ 8) (S 0.5/ +-0.1/ 7) (Color 20)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Cottonwood

42-0014

LYON


07020004366.875

8

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



All greatly exceed the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 165/ +-15.2/ 8) (C 136.1/ +-33.1/ 8) (S 0.6/ +-0.0/ 60) (Color 23)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Rock

42-0052

LYON


07020008392.154

8

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and Secchi exceed the standard; chl-a is at the standard. Lake should be listed as impaired.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 181/ +-19.6/ 8) (C 29.5/ +-7.5/ 8) (S 0.4/ +-0.1/ 7) (Color 15)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Pochardt Slough

42-0080

LYON


0702000635.185

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Wetland

This wetland is situated within Coon Creek Wildlife Management Area approximately 5 miles northeast of Tyler, MN. Turbidity and nutrient concentrations are both very high in this wetland and the sampling crew noted the presence of fathead minnows. This wetland flows into Coon Creek (07020006-511) a section of stream on the Impaired Waters List for not supporting its aquatic life designated use based on an assessment of the fish community. Another impaired wetland site, 41-0128, is also hydrologically connected to this segment of Coon Creek.

This wetland was monitored in 2003 as part of the Redwood Watershed Depressional Wetland study. The macroinvertebrate IBI indicates that this wetland is not supporting its aquatic life designated use.

Use Support

Comments




Not Assessed

Final Assessments

ALUS


Invert IBI(Composite): NS-14 Plant IBI: FS-64





NCHF > 42 > 49 > 47

WCBP & NGP > 51 > 59 > 56

of 132

Basin:

Assessment Cycle:

Minnesota

2010

Weltz Slough

42-0092

LYON


0702000616.257

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Wetland

This wetland is located approximately 13 miles southwest of Marshall, MN and is within the Elmer Weltz Wildlife Management Area. Goose Lake empties into this wetland with water eventually flowing about 1 mile through an intermittent stream before reaching Three Mile Creek. This section of Three Mile Creek (07020006-504) is currently on the Impaired Waters List because it is not supporting its aquatic life designated use based on an assessment of turbidity data.


Use Support

Comments




Not Assessed

Final Assessments

ALUS







NCHF > 42 > 49 > 47

WCBP & NGP > 51 > 59 > 56

of 132

Basin:

Assessment Cycle:

Minnesota

2010

Goose

42-0093

LYON


07020006145.025

8.5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 150/ +-16.1/ 8) (C 36.8/ +-13.7/ 8) (S 0.5/ +-0.1/ 7) (Color 18)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Fox

46-0109

MARTIN


07020009905.545

20

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Data originally reviewed contained a targeted sample for a Microcystin algal bloom on 6/12/07. This data should have been excluded from the assessments. The revised data are as follows:

TP = 110 ug/LChl-a = 44 ug/LSecchi = 0.88 m

TP and chl-a exceed the shallow lake nutrient standard.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 153/ +-37.8/ 8) (C 213.3/ +-130.8/ 8) (S 0.9/ +-0.0/ 140)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Big Twin

46-0133

MARTIN


07020009421.36

18.5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 115/ +-7.6/ 9) (C 42.2/ +-3.8/ 9) (S 0.4/ +-0.0/ 8) (Color 20)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Unnamed

51-0124

MURRAY


0702000640

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Wetland

This wetland is located approximately 2 miles east of Ruthton, MN within the Ruthton Wildlife Management Area – Central Unit. This section of the Redwood River (07020006-505) is currently on the Impaired Waters List because it is not supporting its aquatic life designated use based on an assessment of the fish community.

This wetland was monitored in 2003 as part of the Redwood Watershed Depressional Wetland study. It was also sampled in 2004 to investigate the precision of the IBIs and has since been designated a long term wetland monitoring site by the Biological Monitoring Unit. In 2008 it was sampled (data not yet available) as part of the effort to obtain data from this site every 3-4 years. According to plant and macroinvertebrate IBIs this wetland is not supporting its aquatic life designated use.

Use Support

Comments




Not Assessed

Final Assessments

ALUS







NCHF > 42 > 49 > 47

WCBP & NGP > 51 > 59 > 56

of 132

Basin:

Assessment Cycle:

Minnesota

2010

Unnamed

51-0128

MURRAY


070200061.903

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Wetland

This wetland is located approximately 5 miles southeast of Ruthton, MN within the Ruthton Wildlife Management Area – East Unit. The outlet of this wetland drains to a ditched section of the Redwood River (07020006-505), a segment that is currently on the Impaired Waters List because it is not supporting its aquatic life designated use based on an assessment of the fish community.


Use Support

Comments




Not Assessed

Final Assessments

ALUS







NCHF > 42 > 49 > 47

WCBP & NGP > 51 > 59 > 56

of 132

Basin:

Assessment Cycle:

Minnesota

2010

Unnamed

59-0008

PIPESTONE


0702000613

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Wetland

This wetland is located approximately 2 miles west of Ruthton, MN. A small intermittent ditch drains this wetland and flows about ¼ mile before reaching the headwaters reach of the Redwood River (07020006-505), the same impaired segment connected to other impaired wetland sites.


Use Support

Comments




Not Assessed

Final Assessments

ALUS







NCHF > 42 > 49 > 47

WCBP & NGP > 51 > 59 > 56

of 132

Basin:

Assessment Cycle:

Minnesota

2010

Johanna

61-0006

POPE


070200051239.349

10

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and chl-a exceed the standard; Secchi is within the standard. Recommend listing the lake.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 82/ +-7.0/ 16) (C 35.6/ +-6.6/ 16) (S 1.3/ +-0.1/ 22) (Color 20)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Titlow

72-0042

SIBLEY


07020012851.6

3.5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 197/ +-33.8/ 11) (C 85.4/ +-18.3/ 11) (S 0.5/ +-0.1/ 16) (Color 23)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Perkins

75-0075

STEVENS


07020002504.709

13

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and Secchi exceed the standard. Chl-a appears low on all sampling dates, limited TSS data appears to be within the ecoregion reference range. Recommend listing the lake.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 113/ +-10.4/ 11) (C 14.9/ +-3.1/ 8) (S 0.6/ +-0.0/ 48)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Unnamed

75-0175

STEVENS


0702000244

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Wetland

This wetland is located within Golden Waterfowl Production Area approximately 11 miles southwest of Morris, MN. This wetland has both an inlet and outlet (i.e., flow-through) and is located in the headwaters region of Drywood Creek. In 2008, Phase 2 watershed monitoring was initiated in Drywood Creek and this stream will be included on the 2010 Impaired Waters List based on an assessment of turbidity data.

Monitoring within this wetland was conducted in 2002 and 2003. Both plant and macroinvertebrate IBI results indicated that this wetland was not supporting its aquatic life designated use.

Use Support

Comments




Not Assessed

Final Assessments

ALUS







NCHF > 42 > 49 > 47

WCBP & NGP > 51 > 59 > 56

of 132

Basin:

Assessment Cycle:

Minnesota

2010

Unnamed

75-0375

STEVENS


0702000214

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Wetland

This wetland is located within Lee Waterfowl Production Area approximately 10 miles southwest of Morris, MN. This wetland is a flow-through system; a small intermittent stream flows through this depressional wetland and connects it to downstream impaired waters. It is situated in the headwaters of Drywood Creek, a watershed currently under investigation (Phase 2) that will be included on the Impaired Waters List during the current assessment cycle (2010). This wetland was sampled in 2002, 2003, and 2008 (data not yet available). Based on 2002 and 2003 results, both plant and macroinvertebrate IBIs indicated that this wetland was not supporting its aquatic life designated use. Biologists have noted the presence of dense filamentous algae within this wetland, suggesting that nutrient enrichment may be an issue here.

Use Support

Comments




Not Assessed

Final Assessments

ALUS







NCHF > 42 > 49 > 47

WCBP & NGP > 51 > 59 > 56

of 132

Basin:

Assessment Cycle:

Minnesota

2010

Hollerberg

76-0057

SWIFT


07020005213.11

5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 79/ +-8.2/ 13) (C 34.0/ +-5.8/ 13) (S 0.8/ +-0.1/ 13) (Color 35)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Curtis

87-0016

YELLOW MEDICINE


07020004383.358

6

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 216/ +-8.8/ 8) (C 139.5/ +-21.3/ 8) (S 0.2/ +-0.0/ 16) (Color 23)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Wood

87-0030

YELLOW MEDICINE


07020004465.907

8.5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 132/ +-18.6/ 8) (C 50.2/ +-7.3/ 8) (S 0.4/ +-0.1/ 7) (Color 18)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Minnesota

2010

Unnamed

87-0121

YELLOW MEDICINE


0702000313

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Wetland

This wetland is located within the Sioux Nation Wildlife Management Area approximately 8 miles west of Canby, MN. The outlet of this wetland flows to Lazarus Creek (07020003-509), a section of stream currently on the Impaired Waters List for not supporting its aquatic life designated use based on an assessment of the fish community.

This wetland was sampled by MPCA biologists in 2005. The plant IBI indicates that this wetland is not supporting its aquatic life designated use. Adjacent to the assessed wetland is a calcareous fen, listed as an outstanding resource value water or ORVW in Minnesota Rule 7050.

Use Support

Comments




Not Assessed

Final Assessments

ALUS







NCHF > 42 > 49 > 47

WCBP & NGP > 51 > 59 > 56

of 132

Basin:

Assessment Cycle:

Missouri

2010

Okabena

53-0028

NOBLES


10230003759.425

17

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 151/ +-16.2/ 39) (C 24.6/ +-4.5/ 40) (S 0.5/ +-0.0/ 39)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Red

2010

Height of Land

03-0195

BECKER


090201033796.974

21

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 38/ +-2.3/ 27) (C 11.1/ +-1.3/ 26) (S 1.6/ +-0.1/ 37)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Red

2010

North Tamarack

03-0241-02

BECKER


090201061433.764

17

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

All parameters exceed the nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 39/ +-3.1/ 9) (C 13.5/ +-1.7/ 13) (S 1.5/ +-0.1/ 33)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Red

2010

Sorenson

03-0625

BECKER


0902010642.31Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Max depth acquired from DNR 1965 survey. MPCA DL office confirmed a 10' max depth. Lake greatly exceeds the TP and chl-a standards for shallow lakes.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 177/ +-14.4/ 12) (C 47.1/ +-10.8/ 28) (S 1.3/ +-0.1/ 26) (Color 50)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Red

2010

Blackduck

04-0069

BELTRAMI


090203022633.722

28

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP and chl-a exceed the nutrient standard; Secchi is within the standard. Strong improving trend in Secchi transparency exists. A closer look at the chemistry data revealed a possible outlier on 7/13/06 of chl-a of 93 ug/L; with this value removed, the chl-a still exceeded the nutrient standard. Recommend listing the lake as not supporting aquatic recreation use.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 42/ +-6.6/ 10) (C 31.9/ +-8.4/ 13) (S 2.4/ +-0.1/ 162)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Red

2010

Tulaby

44-0003

MAHNOMEN


09020108817.318

43

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP and chl-a exceed the nutrient standards; Secchi is within the standard. Weak improving trend detected during the most recent Secchi transparency trend analysis. Recommend listing the lake as impaired.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 35/ +-2.2/ 35) (C 16.1/ +-2.4/ 35) (S 2.9/ +-0.2/ 42)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

St. Croix

2010

Little

13-0033

CHISAGO


07030005159.539

23

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Lake was originally reviewed with data from a targeted algal bloom sampling event; this data point (7/31/07) should have been excluded from the assessments. The revised values are as follows:

TP = 173 ug/LChl-a = 70.6 ug/LSecchi = 0.699 m

All parameters greatly exceed the shallow lake nutrient criteria.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 173/ +-16.0/ 8) (C 1568.6/ +-1420.6/ 8) (S 0.7/ +-0.0/ 45)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

St. Croix

2010

Horseshoe

13-0073

CHISAGO


07030005217.85

53

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all exceed the standard.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 53/ +-3.4/ 8) (C 26.3/ +-5.4/ 8) (S 1.3/ +-0.3/ 7)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

St. Croix

2010

Mud (main lake)

82-0026-02

WASHINGTON


0703000584.981

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi all exceed the shallow lake nutrient standards. No depth information was available from DNR; Metropolitan Council data indicated a maximum depth of 7 feet for the basin. As such, it should be held to the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 223/ +-27.4/ 8) (C 167.1/ +-20.4/ 10) (S 0.7/ +-0.1/ 25)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

St. Croix

2010

Lynch

82-0042

WASHINGTON


0703000550.673

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi all greatly exceed the shallow lake nutrient standards. No depth information is available from DNR; however profile data collected shows there is no stratification/thermocline on the lake. The lake should be held to the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 294/ +-22.2/ 18) (C 267.6/ +-34.0/ 31) (S 0.2/ +-0.0/ 18)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

St. Croix

2010

White Rock

82-0072

WASHINGTON


0701020676.403

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi all greatly exceed the shallow lake nutrient standards. There is do depth information available on the lake. Aerial imagery indicates an emergent fringe on the southern end of the lake and the basin is predominately open water. At this time, it is recommend the lake be held to the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 106/ +-7.3/ 23) (C 42.2/ +-4.4/ 39) (S 0.5/ +-0.0/ 21)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Horseshoe

01-0034

AITKIN


07010103231.939

12

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi all greatly exceed the NLF ecoregion standard.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 52/ +-4.0/ 16) (C 21.5/ +-3.3/ 16) (S 1.0/ +-0.1/ 29)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Gun

01-0099

AITKIN


07010104694.961

44

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all exceed the nutrient standards for NLF lakes.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 36/ +-3.8/ 16) (C 11.6/ +-1.8/ 16) (S 1.8/ +-0.0/ 90)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Fleming

01-0105

AITKIN


07010104305

15

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all greatly exceed nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 64/ +-4.0/ 37) (C 37.8/ +-4.3/ 35) (S 1.0/ +-0.0/ 77)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Elm Island

01-0123

AITKIN


07010104526.376

25

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all greatly exceed standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 46/ +-3.4/ 18) (C 23.8/ +-2.9/ 20) (S 0.9/ +-0.0/ 144) (Color 50)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Waukenabo

01-0136

AITKIN


07010104597.668

38

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all exceed nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 31/ +-3.8/ 14) (C 16.1/ +-2.9/ 14) (S 1.5/ +-0.1/ 21)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Esquagamah

01-0147

AITKIN


07010104818.624

31

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

Secchi is indicating a strong improving trend. However, the parameters greatly exceed the standards; the lake should be listed as impaired.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 53/ +-7.2/ 26) (C 20.2/ +-4.1/ 26) (S 1.5/ +-0.1/ 100) (Color 20)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Blind

01-0188

AITKIN


07010104308.244

17

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all exceed the nutrient standards. Secchi is indicating in improving trend at this time. Recommend listing the lake as parameters are not close to the threshold.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 42/ +-3.0/ 15) (C 16.8/ +-2.5/ 15) (S 1.4/ +-0.1/ 57)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Rice

02-0008

ANOKA


07010206362.124

4.8

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 183/ +-27.0/ 19) (C 56.8/ +-13.7/ 19) (S 0.6/ +-0.1/ 13)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Baldwin

02-0013

ANOKA


07010206187.558

4.5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 213/ +-29.7/ 12) (C 79.6/ +-21.0/ 13) (S 0.4/ +-0.1/ 10)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Irving

04-0140

BELTRAMI


07010101661.839

16

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all exceed the NLF nutrient standards. A strong declining trend in Secchi transparency was evident during the most recent trend analysis.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 81/ +-11.0/ 13) (C 43.2/ +-11.6/ 13) (S 1.3/ +-0.1/ 126)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Donovan (main bay)

05-0004-02

Benton


070102030

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and chl-a exceed the shallow lake standards. Secchi is currently within the standards. Lake should be listed as impaired.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 139/ +-10.4/ 11) (C 51.5/ +-6.9/ 11) (S 2.3/ +-0.2/ 11)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Upper (North) Island

09-0060-01

CARLTON


07010103104.418

25

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all exceed the NLF standards. No trend data is available on the lake. Recommend non support listing.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 34/ +-3.3/ 8) (C 12.7/ +-3.1/ 12) (S 1.5/ +-0.0/ 51)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Tamarack

09-0067

CARLTON


07010103234.073

48

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP and Secchi exceed the standard; chl-a is within the standard. No color data was collected; Secchi transparency is not limited by depth. On several occasions each summer, user perception information rated the water quality as 'poor' and 'high algal color.' Recommend listing the lake.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 30/ +-1.0/ 8) (C 7.0/ +-0.8/ 12) (S 1.6/ +-0.0/ 113)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

East Auburn

10-0044-02

CARVER


07010206136.211

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all exceed nutrient standards. Chl-a is particularly elevated relative to the standard. Adjacent basin has significantly better water quality. East Auburn has a considerable wetland fringe; however, the lake is still considered deep.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 53/ +-5.4/ 9) (C 37.6/ +-10.6/ 9) (S 1.2/ +-0.1/ 18)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Platte

18-0088

CROW WING


070102011656.22

23

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all exceed the nutrient standards. Strong declining trend in Secchi transparency during the most recent trend analysis.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 36/ +-2.7/ 23) (C 11.2/ +-0.8/ 23) (S 1.6/ +-0.0/ 169) (Color 33)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Crow Wing

18-0155

CROW WING


07010104370.652

26

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all greatly exceed the NLF standards. No Secchi trend was evident during the last trend analysis. Color and depth are not limiting factors for Secchi transparency.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 40/ +-4.8/ 11) (C 24.9/ +-4.1/ 17) (S 1.6/ +-0.1/ 44) (Color 38)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Kego

18-0293

CROW WING


07010105289.017

20

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP and chl-a exceed the NLF nutrient standards. Secchi is within the standards. The lake consistently spikes in both TP and chl-a in September (03, 05, and 07). Recommend listing the lake.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 37/ +-2.9/ 15) (C 12.3/ +-2.9/ 19) (S 2.6/ +-0.3/ 30)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Sunfish

19-0050

DAKOTA


0701020645.077

32

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

Lake is 87% littoral with a maximum depth of 32 feet. No profile data is available; however high TP values have been measured in April and October, indicating that lake likely stratifies during the summer months. For this reason, the lake will be held to the deep lake standards.

TP, chl-a, and Secchi all exceed the deep lake nutrient standards; chl-a also exceeds the shallow lake standard.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 49/ +-4.6/ 26) (C 31.5/ +-3.4/ 43) (S 1.3/ +-0.2/ 26)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Diamond

27-0022

HENNEPIN


0701020650.22

5.8

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Parameters all exceed the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 187/ +-14.8/ 54) (C 56.6/ +-5.8/ 54) (S 0.6/ +-0.0/ 80)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

GLEASON (N. BAY)

27-0095-01

HENNEPIN


07010206Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:




Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 113/ +-9.1/ 23) (C 60.2/ +-9.2/ 23) (S 0.9/ +-0.1/ 23)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Snyder

27-0108

HENNEPIN


0701020614.049

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi all greatly exceed shallow lake nutrient standards. No depth information is available on the lake; aerial imagery indicates a basin with an emergent fringe.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 198/ +-30.3/ 9) (C 136.8/ +-52.0/ 9) (S 0.7/ +-0.1/ 9)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Rice Main Lake

27-0116-01

Hennepin


070102060

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Very high TP, chl-a, and low Secchi values, well over the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 297/ +-56.9/ 14) (C 80.8/ +-9.0/ 28) (S 0.9/ +-0.0/ 87)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Mooney

27-0134

HENNEPIN


07010206110.172

10

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi each exceed the standard for shallow lakes.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 84/ +-6.5/ 18) (C 47.5/ +-6.7/ 18) (S 0.7/ +-0.1/ 18)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Tanager

27-0141

HENNEPIN


0701020651.203Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

All parameters exceed the deep lake standards; TP and chl-a exceed the shallow lake standards. Available depth and littoral area information indicate this lake should be held to the deep lake standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 96/ +-6.4/ 24) (C 78.8/ +-8.4/ 24) (S 1.0/ +-0.1/ 62)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Wolsfeld

27-0157

HENNEPIN


0701020636.56

26

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

Parameters all exceed both the deep and shallow lake standards. Available depth and littoral area indicate this lake should be held to the deep lake standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 85/ +-15.3/ 9) (C 60.6/ +-13.4/ 9) (S 0.8/ +-0.2/ 9)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Holy Name

27-0158

HENNEPIN


0701020665.201

7

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi all exceed the shallow lake standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 150/ +-23.0/ 9) (C 96.1/ +-32.7/ 9) (S 0.8/ +-0.2/ 9)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Long

27-0160

HENNEPIN


07010206277.318

33

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

All parameters exceed the deep lake standards; Chl-a and Secchi exceed the shallow lake standards as well. Available depth and littoral area indicate this lake should be held to the deep lake standard.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 59/ +-5.5/ 23) (C 39.3/ +-3.3/ 23) (S 1.0/ +-0.1/ 32)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Cowley

27-0169

HENNEPIN


0701020446.506

0

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi greatly exceed the shallow lake nutrient standards. There is a large range in values on this lake; however, the minimum TP greatly exceeds the standard. Recommend listing the lake.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 946/ +-415.1/ 8) (C 137.7/ +-36.4/ 9) (S 0.9/ +-0.3/ 8)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Dutch

27-0181

HENNEPIN


07010206160.474

43

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 55/ +-3.1/ 23) (C 34.7/ +-3.8/ 23) (S 1.0/ +-0.1/ 23)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Langdon

27-0182

HENNEPIN


07010206141.518

38

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all greatly exceed both the deep and shallow lake standards for this ecoregion. Temperature declines with depth and hypolimnetic TP samples are much higher in TP than surface during the summer months; this would indicate the lake should be held to the deep lake standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 176/ +-19.9/ 16) (C 66.0/ +-8.0/ 16) (S 0.5/ +-0.0/ 16)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Mud

27-0186

HENNEPIN


0701020675.395

5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi greatly exceed shallow lake standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 231/ +-30.6/ 8) (C 127.3/ +-24.4/ 8) (S 0.4/ +-0.1/ 8)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Split Hand

31-0353

ITASCA


070101031368.557

34

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 43/ +-7.0/ 9) (C 17.0/ +-3.6/ 9) (S 1.7/ +-0.1/ 152) (Color 25)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Prairie

31-0384

ITASCA


070101031296.424

31

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 32/ +-1.8/ 12) (C 10.5/ +-1.0/ 12) (S 1.7/ +-0.0/ 83) (Color 45)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Little Kandiyohi

34-0096

KANDIYOHI


07010205668.776Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Basin greatly exceeds shallow standards for all parameters.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 264/ +-17.3/ 13) (C 169.7/ +-18.8/ 21) (S 0.2/ +-0.0/ 21)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Kasota

34-0105

KANDIYOHI


07010205434.369Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Basin greatly exceeds shallow lake standards for all parameters.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 317/ +-15.6/ 13) (C 167.7/ +-11.8/ 21) (S 0.2/ +-0.0/ 21)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Nest

34-0154

KANDIYOHI


07010204979.732

40

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP and chl-a exceed the thresholds for nutrient impairment. Recommend listing the lake. The lake is susceptible to wind mixing, but considering the maximum depth and percent littoral area, the lake should be held to the deep lake standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 45/ +-3.0/ 34) (C 18.3/ +-2.4/ 34) (S 1.8/ +-0.1/ 47)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Marion

43-0084

MCLEOD


07010205521.907

15

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



The lake was originally reviewed for assessment with targeted samples from 7/12/06, 8/8/06, and 8/29/06 taken at algal bloom sites. These chlorophyll-a data points should have been excluded from the assessment dataset. The revised value is:

Chl-a = 38.3 ug/L

TP, chl-a, and secchi all exceed the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 105/ +-15.0/ 9) (C 51.0/ +-12.4/ 9) (S 0.4/ +-0.1/ 8)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

OTTER (MAIN BASIN)

43-0085-01

MCLEOD


07010205351.382

4.5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Lake was originally reviewed with data that included targeted algal bloom sampling on 7/12/06, 8/8/06, and 8/29/06. These data points should have been excluded from the assessment dataset. The revised numbers are as follows:TP = 366 ug/LChl-a = 109 ug/LSecchi 0.19 m

All parameters greatly exceed the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 377/ +-49.8/ 9) (C 116.4/ +-14.0/ 9) (S 0.2/ +-0.0/ 9)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Cedar

43-0115

MCLEOD


070102051833.906

8

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi all exceed shallow lake nutrient standards for the ecoregion.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 107/ +-9.9/ 9) (C 46.1/ +-3.0/ 9) (S 0.4/ +-0.0/ 9)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Jennie

47-0015

MEEKER


070102041057.145

14

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP just exceeds the nutrient standard for shallow lakes and chl-a is well over the standard. Secchi is within the standard. Recommend listing the lake.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 61/ +-7.7/ 9) (C 27.7/ +-4.3/ 9) (S 1.6/ +-0.1/ 34)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Big Swan

47-0038

MEEKER


07010204645.68

32

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP, chl-a, and Secchi all exceed the deep lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 93/ +-6.3/ 20) (C 46.8/ +-3.3/ 15) (S 1.1/ +-0.1/ 98)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Greenleaf

47-0062

MEEKER


07010205228.703

18

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:




Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 74/ +-8.0/ 8) (C 32.7/ +-4.0/ 8) (S 0.7/ +-0.1/ 8)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Westport

61-0029

POPE


07010202199.435

12

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi each exceed the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 79/ +-6.7/ 12) (C 45.7/ +-6.9/ 12) (S 0.9/ +-0.2/ 12)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Gilfillan

62-0027

RAMSEY


07010206100.954

9

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Shallow basin with 100% littoral area. TP and chl-a exceed the nutrient standards. While there is a large range in the data, the majority of the samples exceed the standard. Recommend listing the lake.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(C 26.5/ +-2.8/ 62) (S 1.0/ +-0.1/ 38)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Goose

62-0034

RAMSEY


07010206130.314Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



Shallow basin with 100% littoral area. TP 420 ug/L (se 43 ug/L) greatly exceeds the shallow lake nutrient criteria. Chlorophyll-a and TP vary greatly for this basin. Secchi has always exceeded the standard. Recommend listing the lake as not supporting aquatic recreation use.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(C 85.0/ +-10.1/ 45) (S 0.2/ +-0.0/ 60)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Gem

62-0037

RAMSEY


0701020620.612Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and chl-a exceed the standard. The lake is protected by DNR as a wetland. However, the VLAWMO provided profile and bathymetry data that were not available during the original assessment. Given the size of the basin, sheltered nature of the lake, and the local input that the basin is utilized as a lake (beaches and nonmotorized boating). Will recommend listing the lake as impaired.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(C 62.6/ +-28.3/ 54) (S 1.1/ +-0.1/ 73)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Wilkinson

62-0043

RAMSEY


0701020695.263

1

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



The maximum depth on this basin is estimated to be 1.5 meters. All parameters exceed the shallow lake nutrient standards. It is recommended that the lake be listed for aquatic recreation use.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(C 30.2/ +-6.1/ 57) (S 0.5/ +-0.1/ 15)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Two Rivers

73-0138

STEARNS


07010201583.605

63

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP and chl-a exceed the deep lake nutrient standard. There is no Secchi trend at this time.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 49/ +-3.9/ 13) (C 31.7/ +-3.0/ 13) (S 1.6/ +-0.1/ 125) (Color 30)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Eden

73-0150

STEARNS


07010202260.148

77

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP and chl-a exceed the deep lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 67/ +-11.5/ 13) (C 23.9/ +-7.2/ 13) (S 1.7/ +-0.2/ 47) (Color 28)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Vails

73-0151

STEARNS


07010202150.104

20.5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and chl-a exceed the shallow lake nutrient standard, Secchi is within the standard. Maximum depth is 20, but the littoral area is 84%; recommended the lake is held to the shallow lake nutrient criteria.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 163/ +-36.0/ 9) (C 69.5/ +-19.9/ 9) (S 1.5/ +-0.1/ 38) (Color 40)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Sand

73-0199

STEARNS


07010202210.142

12

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:




Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 118/ +-14.8/ 15) (C 38.6/ +-7.5/ 15) (S 0.5/ +-0.0/ 101)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

McCormic

73-0273

STEARNS


07010202185.656

12

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP and chl-a greatly exceed the shallow lake nutrient standards; Secchi is well within the standard. The TSI values for TP and chl-a agree closely while Secchi is under predicting nutrient levels.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 80/ +-12.9/ 14) (C 51.0/ +-11.8/ 14) (S 2.7/ +-0.8/ 14) (Color 18)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Big Swan

77-0023

TODD


07010104876.603

45

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 51/ +-7.0/ 18) (C 31.0/ +-5.1/ 18) (S 2.2/ +-0.1/ 186)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Maple

77-0181

TODD


07010202376.344

23

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:


Lake Reservoir/Lake

TP and chl-a greatly exceed the deep and shallow lake nutrient standards. Secchi is within the standards. The maximum depth is 23 feet with a littoral area of 41%. The lake does not appear to stratify - temp dropped about 4 degrees C and DO dropped only about 2 mg/L over the 5 m depth of the profile. It is likely the lake intermittently mixes. No depth TP was collected. Recommend that the lake be held to the deep lake standards at this time.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 79/ +-7.9/ 18) (C 45.7/ +-6.1/ 18) (S 1.9/ +-0.2/ 35)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Dutch

86-0184

WRIGHT


07010204156.574

20.5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:



TP, chl-a, and Secchi all exceed the deep and shallow lake nutrient standards. A closer review of the data revealed that a targeted algal bloom sample was included in the dataset (6/6/07 TP of 544 ug/L and chl-a of 400 ug/L). After excluding this data point, the 10 year average was recalculated as follows:TP = 176 ug/LChl-a = 57.8 ug/L.

A LAP report from 2005 indicated that Dutch Lake is behaving as a shallow basin with increasing nutrient loads across the summer; a likely result of internal loading of phosphorus. The lake is a point source impacted lake.

Recommend the lake be listed as impaired and held to the shallow lake nutrient standards.

Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 186/ +-17.4/ 17) (C 67.4/ +-12.7/ 17) (S 0.5/ +-0.1/ 14) (Color 20)



Lake ARUS Criteria:









of 132

Basin:

Assessment Cycle:

Upper Mississippi

2010

Smith

86-0250

WRIGHT


07010204181.911

5

Name:

AUID:

County:

Ecoregion:

HUC:Acres:

Max Depth (ft)

Assessment Type:




Use Support

Comments




Not Assessed

Final Assessments

ARUS


(P 181/ +-25.1/ 8) (C 117.1/ +-37.3/ 8) (S 0.2/ +-0.0/ 7) (Color 28)



Lake ARUS Criteria:









of 132

2010 clean water act reporting cycle lake/wetland ... · pdf file2010 clean water act...

Documents