Cave Lake is a lake in Kootenai County, Idaho. Its water-quality measurements are published by Idaho DEQ and shown on this page as reported.

Cave Lake

Kootenai County, Idaho760 acresView map Directions

No nutrient or algae sampling on record from Idaho DEQ for this lake.

Area

760 acres

Surface area

Shoreline

6.6 mi

Measured length

Impaired · Metals (other than mercury)

See the measurements Directions Where to stay

Cave Lake in Kootenai County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Surface area: 760 acres.

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Cave Lake is a 760-acre lake in Kootenai County, Idaho.

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

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Cave Lake is listed impaired under Clean Water Act §303(d) (IR 5) for metals (other than mercury). Check local advisories before you swim.

Whether Cave 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.

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Water quality measurements for Cave Lake

These are the measurements Idaho DEQ publishes for Cave 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 Cave Lake

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

Lake Details

Surface area

760 acres

Shoreline

6.6 mi

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

Stays via Stay22

Stays near Cave Lake

Compare lakeside cabins, hotels, and vacation rentals near Cave Lake in Kootenai County, Idaho — 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 Cave Lake

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

EPA Impairment Status

Cave Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).

Causes of impairment

Metals (other than mercury)

Designated uses not supporting: Aquatic life.

Source: EPA ATTAINS assessment unit ID17010303PN010L_0L · Official waterbody report

Nearby Lakes in Kootenai County

Medicine Lake1 miView →Swan Lake1.6 miView →Black Lake2.8 miView →Killarney Lake4.2 miView →Blue Lake4 miView →Thompson Lake5.6 miView →

Frequently asked questions about Cave Lake

Where is Cave Lake?: Cave 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 Cave Lake?: Cave Lake in Kootenai County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Surface area: 760 acres.
Is Cave Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Cave Lake is listed impaired under Clean Water Act §303(d) (IR 5) for metals (other than mercury). Check local advisories before you swim.