Brush Lake is a lake in Brookings County, South Dakota. Its water-quality measurements are published by SD DANR and shown on this page as reported.

Brush Lake

Brookings County, South Dakota196 acresView map Directions

No nutrient or algae sampling on record from SD DANR for this lake.

Area

196 acres

Surface area

Shoreline

2.5 mi

Measured length

Impaired · Mercury
Limited data

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Brush Lake in Brookings County, South Dakota has water-quality measurements published by SD DANR, shown here as reported. Surface area: 196 acres.

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Brush Lake is a 196-acre lake in Brookings County, South Dakota.

Source: EPA Water Quality Portal sampling records, SD DANR. Methodology: how these readings are compared.

Swimming conditions

No reading

Limited data

Nutrient and algae readings are not a swimming clearance. Brush Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.

Whether Brush Lake is safe to swim in today is a call for the South Dakota Department of Agriculture and Natural Resources and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Brush Lake

These are the measurements SD DANR publishes for Brush Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.

No clarity data.

Ask about Brush Lake

Answers come straight from the public measurements and survey records on this page.

Lake Details

Surface area

196 acres

Shoreline

2.5 mi

No bathymetric survey has been published for Brush Lake, so its depth is not documented here.

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Stays near Brush Lake

Compare lakeside cabins, hotels, and vacation rentals near Brush Lake in Brookings County, South Dakota — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

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Fishing Brush Lake

→ Brush Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Brush Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).

Causes of impairment

Mercury

Designated uses not supporting: Aquatic life.

A Total Maximum Daily Load (TMDL) plan has been approved.

Source: EPA ATTAINS assessment unit SD-BS-L-BRUSH_01 · Official waterbody report

Nearby Lakes in Brookings County

Lake Sinai4.4 miView →Lake Mitchell6.4 miView →Nelson Slough8.6 miView →Mortimer Slough—View →Pederson Slough—View →Moe Slough—View →

Frequently asked questions about Brush Lake

Where is Brush Lake?: Brush Lake is a lake in Brookings County, South Dakota. Its water-quality measurements are published by SD DANR and shown on this page as reported.
What is the water quality of Brush Lake?: Brush Lake in Brookings County, South Dakota has water-quality measurements published by SD DANR, shown here as reported. Surface area: 196 acres.
Is Brush Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Brush Lake is listed impaired under Clean Water Act §303(d) (IR 4A) for mercury. Check local advisories before you swim.