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

How deep is Swan Lake?

Swan Lake has a maximum depth of 15.1 feet. The lake covers 669 acres.

Swan Lake

Kootenai County, Idaho669 acresView map Directions

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

Max depth

15.1 ft

Bathymetric survey

Area

669 acres

Surface area

Shoreline

6.6 mi

Measured length

Impaired · Mercury
15 ft max depth

See the measurements Directions Where to stay

Swan Lake in Kootenai County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Maximum depth: 15.1 ft. Surface area: 669 acres.

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Swan Lake is a 669-acre lake in Kootenai County, Idaho with a maximum depth of 15 feet.

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

Swimming conditions

No reading

Recreation use not supported

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

Whether Swan 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 Swan Lake

These are the measurements Idaho DEQ publishes for Swan 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 Swan Lake

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

Lake Details

Max depth

15.1 ft

Surface area

669 acres

Shoreline

6.6 mi

Stays via Stay22

Stays near Swan Lake

Compare lakeside cabins, hotels, and vacation rentals near Swan 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 Swan Lake

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

EPA Impairment Status

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

Causes of impairment

Mercury

Designated uses not supporting: Aquatic life, Recreation.

Source: EPA ATTAINS assessment unit ID17010303PN023L_0L · Official waterbody report

Nearby Lakes in Kootenai County

Black Lake1.7 miView →Cave Lake1.6 miView →Blue Lake2.5 miView →Medicine Lake2.7 miView →Thompson Lake4 miView →Killarney Lake—View →

Frequently asked questions about Swan Lake

Where is Swan Lake?: Swan 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 Swan Lake?: Swan Lake in Kootenai County, Idaho has water-quality measurements published by Idaho DEQ, shown here as reported. Maximum depth: 15.1 ft. Surface area: 669 acres.
Is Swan Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Swan Lake is listed impaired under Clean Water Act §303(d) (IR 5) for mercury. Check local advisories before you swim.
How deep is Swan Lake?: Swan Lake has a maximum depth of 15.1 feet. The lake covers 669 acres.