What is the water quality grade for Table Rock L. Ab. Oswalt Bluff Lake?

Table Rock L. Ab. Oswalt Bluff Lake in Stone County, Wisconsin received a water quality grade of B (Good). Water clarity: 6 ft visibility. Phosphorus: 12 µg/L. Chlorophyll-a (algae): 7.2 µg/L.

Is Table Rock L. Ab. Oswalt Bluff Lake safe to swim in?

Good for swimming, clear water with low algae levels. Table Rock L. Ab. Oswalt Bluff Lake has an overall water quality grade of B. Algae concentration (chlorophyll-a) is 7.2 µg/L. Always check local health department advisories before swimming.

Table Rock L. Ab. Oswalt Bluff Lake

Stone County, WisconsinMesotrophic

Table Rock L. Ab. Oswalt Bluff Lake is a mesotrophic lake in Stone County, MO. Water quality is graded B based on 3 sampling years through 2024. Compared to the 15 other monitored lakes in Stone County, Table Rock L. Ab. Oswalt Bluff Lake ranks #11 for water quality.

Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2024-09-17. Grade methodology: LakeGrade methodology.

Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Murky, only visible to about 6 ft. Phosphorus level: 12 µg/L. Chlorophyll-a: 7.2 µg/L. Trophic State Index: 47.

Metric	Value	Grade
Water Clarity (Secchi Depth)	6 ft	D
Phosphorus	12 µg/L	A
Chlorophyll-a (Algae)	7.2 µg/L	B
Trophic State Index (TSI)	47	Mesotrophic

Moderate nutrients, good water quality

Location

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County Ranking

Ranked #11 of 16 lakes in Stone County

Cleaner Lakes Within 30 Miles

Table Rock L. Ab. Oswalt Bluff Lake holds Grade B. 5 nearby lakes hold higher grades.

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Other Grade B Lakes in Wisconsin

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Taney County · Clarity: 8.7 ft

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Mesotrophic Lakes in Wisconsin

Table Rock Lake Whippoorwill Lake Forest Lake Fox Valley Lake

EPA Impairment Status

Table Rock L. Ab. Oswalt Bluff Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).

Causes of impairment

Algal growthNutrients (phosphorus, nitrogen)

Source: EPA ATTAINS assessment unit MO_7313.00 · Official waterbody report · Matched by proximity (2.64 km)

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: 2024-09-17

Monitoring stations: 1