What is the water quality grade for Teal Lake?

Teal Lake in Audrain County, Wisconsin received a water quality grade of F (Very Poor). Water clarity: 2 ft visibility. Phosphorus: 109 µg/L. Chlorophyll-a (algae): 97.7 µg/L. Surface area: 78 acres.

Is Teal Lake safe to swim in?

Avoid swimming, very poor water quality, potential algae toxins. Teal Lake has an overall water quality grade of F. Algae concentration (chlorophyll-a) is 97.7 µg/L. Always check local health department advisories before swimming.

Teal Lake

Audrain County, WisconsinHypereutrophic

Teal Lake is a 78-acre highly nutrient-loaded hypereutrophic lake in Audrain County, MO. Water quality is graded F based on 3 sampling years through 2020. Compared to the 3 other monitored lakes in Audrain County, Teal Lake ranks #4 for water quality.

Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2020-07-22. Grade methodology: LakeGrade methodology.

Swimming Safety

Avoid swimming, very poor water quality, potential algae toxins

Water Quality Grade: F, Very Poor

Very murky, less than 2 ft of visibility. Phosphorus level: 109 µg/L. Chlorophyll-a: 97.7 µg/L. Trophic State Index: 71.

Metric	Value	Grade
Water Clarity (Secchi Depth)	2 ft	F
Phosphorus	109 µg/L	F
Chlorophyll-a (Algae)	97.7 µg/L	F
Trophic State Index (TSI)	71	Hypereutrophic

Very high nutrients, dense algae, poor clarity

Lake Details

Characteristic	Value
Surface Area	78 acres

Location

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County Ranking

Ranked #4 of 4 lakes in Audrain County

Cleaner Lakes Within 30 Miles

Teal Lake holds Grade F. 5 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Audrain County

Oasis Ranch Lake

Audrain County

Oasis Ranch Upper Lake

Audrain County

Vandalia Community Lake

More Wisconsin Lake Rankings

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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

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Other Grade F Lakes in Wisconsin

Creve Coeur Lake

St. Louis County · Clarity: 1.6 ft

Lake of the Woods-Kc

Jackson County · Clarity: 2 ft

Lake St. Louis by Dam

St. Charles County · Clarity: 2.3 ft

Hemitite Lake

St. Francois County · Clarity: 1.1 ft

Blind Pony Lake

Saline County · Clarity: 2.3 ft

Stockton Lake Upstream of Hwy 123 Bridge

Polk County · Clarity: 1.2 ft

Hypereutrophic Lakes in Wisconsin

Hemitite Lake Stockton Lake Upstream of Hwy 123 Bridge Dairy Farm Lake No.1 Lake St. Louis Nr. Hwy 40

Reservoir Info (USACE NID)

Teal Lake is a man-made reservoir impounded by the Teal Lake Dam (completed 1969), built primarily for recreation on the TR-SOUTH FORK SALT RIVER; rockfill-type dam, 20 ft tall.

Surface area: 78 ac
Normal storage: 179 ac-ft
Max storage: 835 ac-ft
Drainage area: 3,387 sq mi
Hazard class: High
Owner: A P GREEN REFRACTORY CO

Source: USACE National Inventory of Dams, NID ID MO10082 · Operator website

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2020-07-22

Monitoring stations: 1