What is the water quality grade for Warsing Dam Lake?

Warsing Dam Lake in Eddy County, Wisconsin received a water quality grade of D (Poor). Water clarity: 2.3 ft visibility. Chlorophyll-a (algae): 25.7 µg/L. Surface area: 51 acres.

Is Warsing Dam Lake safe to swim in?

Swimming not recommended, poor water quality with high algae risk. Warsing Dam Lake has an overall water quality grade of D. Algae concentration (chlorophyll-a) is 25.7 µg/L. Always check local health department advisories before swimming.

Warsing Dam Lake

Eddy County, WisconsinEutrophic

Warsing Dam Lake is a 51-acre productive, nutrient-rich eutrophic lake in Eddy County, ND. Water quality is graded D based on 2 sampling years through 2021.

Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2021-10-18. Grade methodology: LakeGrade methodology.

Swimming Safety

Swimming not recommended, poor water quality with high algae risk

Water Quality Grade: D, Poor

Very murky, less than 2.3 ft of visibility. Chlorophyll-a: 25.7 µg/L. Trophic State Index: 64.

Metric	Value	Grade
Water Clarity (Secchi Depth)	2.3 ft	F
Phosphorus	No data
Chlorophyll-a (Algae)	25.7 µg/L	D
Trophic State Index (TSI)	64	Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

Characteristic	Value
Surface Area	51 acres

Location

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County Ranking

Ranked #1 of 1 lakes in Eddy County

Cleaner Lakes Within 30 Miles

Warsing Dam Lake holds Grade D. 4 nearby lakes hold higher grades.

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Other Grade D Lakes in Wisconsin

Dry Lake

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Lake Alice

Ramsey County · Clarity: 3.1 ft

E. A. Patterson Lake

Stark County · Clarity: 5.3 ft

Lake Irvine

Ramsey County · Clarity: 2.9 ft

Lake Laretta

Nelson County · Clarity: 3.8 ft

Sweetwater Lake

Ramsey County · Clarity: 2.9 ft

Eutrophic Lakes in Wisconsin

Lake Alice J. Clark Salyer Pool 357 E. A. Patterson Lake Lake Irvine

Reservoir Info (USACE NID)

Warsing Dam Lake is a man-made reservoir impounded by the Warsing Dam (completed 1961), built primarily for recreation on the Sheyenne River-TR; earth-type dam, 33 ft tall and 640 ft long.

Surface area: 51 ac
Normal storage: 594.7 ac-ft
Max storage: 1,264.7 ac-ft
Drainage area: 20 sq mi
Hazard class: Low
Owner: ND Game & Fish

Source: USACE National Inventory of Dams, NID ID ND00002 · Operator website

EPA Impairment Status

Warsing Dam Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).

Causes of impairment

Nutrients (phosphorus, nitrogen)Oxygen depletion (low DO)Sediment / turbidity

Source: EPA ATTAINS assessment unit ND-09020202-001-L_00 · Official waterbody report

Data Sources

Water quality data from the EPA Water Quality Portal

Impairment status from EPA ATTAINS 303(d) database

Grading methodology based on Metropolitan Council standards

Most recent sample: 2021-10-18

Monitoring stations: 1