What is the water quality grade for Red Fox Lake?

Red Fox Lake in Warren County, Wisconsin received a water quality grade of C (Fair). Water clarity: 3.3 ft visibility. Phosphorus: 40 µg/L. Chlorophyll-a (algae): 10.3 µg/L. Surface area: 13 acres.

Is Red Fox Lake safe to swim in?

Generally safe for swimming, moderate water quality. Red Fox Lake has an overall water quality grade of C. Algae concentration (chlorophyll-a) is 10.3 µg/L. Always check local health department advisories before swimming.

Red Fox Lake

Warren County, WisconsinEutrophic

Red Fox Lake is a 13-acre productive, nutrient-rich eutrophic lake in Warren County, MO. Water quality is graded C based on 3 sampling years through 2020. Compared to the 15 other monitored lakes in Warren County, Red Fox Lake ranks #10 for water quality.

Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2020-09-16. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Very murky, less than 3.3 ft of visibility. Phosphorus level: 40 µg/L. Chlorophyll-a: 10.3 µg/L. Trophic State Index: 57.

Metric	Value	Grade
Water Clarity (Secchi Depth)	3.3 ft	D
Phosphorus	40 µg/L	C
Chlorophyll-a (Algae)	10.3 µg/L	C
Trophic State Index (TSI)	57	Eutrophic

High nutrients, frequent algae, reduced clarity

Lake Details

Characteristic	Value
Surface Area	13 acres

Location

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County Ranking

Ranked #10 of 16 lakes in Warren County

Cleaner Lakes Within 30 Miles

Red Fox Lake holds Grade C. 5 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Warren County

Sherwood Lake Nr. Dam

More Wisconsin Lake Rankings

Cleanest lakes in Wisconsin

Top 25 by overall water quality score

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Grade A/B + low algae filter

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Panfish-rich, public access

All Wisconsin lakes

Full state directory

Other Grade C Lakes in Wisconsin

Mark Twain Lake by Hwy J

Ralls County · Clarity: 3.7 ft

Waukomis Lake

Platte County · Clarity: 4.7 ft

Table Rock L. Nr. Greens Hollow Lake

Barry County · Clarity: 5 ft

Little Prairie Lake by Dam

Phelps County · Clarity: 4.9 ft

Old Reservoir

Randolph County · Clarity: 3.6 ft

Mark Twain Lake Indian Creek Arm

Ralls County · Clarity: 3.8 ft

Eutrophic Lakes in Wisconsin

Boathouse Lake Hunnewell Lake Long Branch Lk. Lake Creve Coeur Lake

Reservoir Info (USACE NID)

Red Fox Lake is a man-made reservoir impounded by the Sherman Lake Dam (completed 1964), built primarily for recreation on the TR CHARETTE CREEK; earth-type dam, 33 ft tall.

Surface area: 13 ac
Normal storage: 135 ac-ft
Max storage: 230 ac-ft
Drainage area: 200 sq mi
Hazard class: High
Owner: WILLIAM SHERMAN

Source: USACE National Inventory of Dams, NID ID MO30518 · Operator website · Matched by proximity (0.72 km)

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2020-09-16

Monitoring stations: 1