Black Lake
Kootenai County, Idaho380 acresView mapDirections
No nutrient or algae sampling on record from Idaho DEQ for this lake.
- Impaired · Metals (other than mercury)
- 25 ft max depth
Black Lake in Kootenai County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Maximum depth: 24.9 ft. Surface area: 380 acres.
Black Lake is a 380-acre lake in Kootenai County, Idaho with a maximum depth of 25 feet.
Source: EPA Water Quality Portal sampling records, IDEQ. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Black Lake is listed impaired under Clean Water Act §303(d) (IR 5) for metals (other than mercury), nutrients (phosphorus, nitrogen). Check local advisories before you swim.
Whether Black Lake is safe to swim in today is a call for the Idaho Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Black Lake
These are the measurements Idaho DEQ publishes for Black 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. TSI undefined.
Ask about Black Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
24.9 ft
Surface area
380 acres
Shoreline
6.1 mi
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Fishing Black Lake
EPA Impairment Status
Black Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit ID17010303PN009L_0L · Official waterbody report
Nearby Lakes in Kootenai County
Frequently asked questions about Black Lake
Where is Black Lake?
- Black Lake is a lake in Kootenai County, Idaho. Its water-quality measurements are published by Idaho DEQ and shown on this page as reported.
What is the water quality of Black Lake?
- Black Lake in Kootenai County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Maximum depth: 24.9 ft. Surface area: 380 acres.
Is Black Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Black Lake is listed impaired under Clean Water Act §303(d) (IR 5) for metals (other than mercury), nutrients (phosphorus, nitrogen). Check local advisories before you swim.
How deep is Black Lake?
- Black Lake has a maximum depth of 24.9 feet. The lake covers 380 acres.
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Where this data comes from
Measurements for Black Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database