Where is Lake Thomas?

Lake Thomas is a lake in Stevens County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.

Are there campgrounds on Lake Thomas?

Lake Thomas has 1 public campground from USGS The National Map within 5 km, including Lake Thomas. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.

Lake Thomas

Stevens County, Washington161 acresView map Directions

No nutrient or algae sampling on record from Washington Ecology for this lake.

Area

161 acres

Surface area

Shoreline

2.8 mi

Measured length

Impaired · Nuisance exotic species

See the measurements Directions Where to stay

Lake Thomas in Stevens County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 161 acres.

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Lake Thomas is a 161-acre lake in Stevens County, Washington.

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

What Lake Thomas is good for

From access and monitoring records, not editorial picks.

Camping1 public campground nearby

Swimming conditions

No reading

Not rated

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

Whether Lake Thomas is safe to swim in today is a call for the Washington State Department of Ecology and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.

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Water quality measurements for Lake Thomas

These are the measurements Washington Ecology publishes for Lake Thomas, 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 Lake Thomas

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

Lake Details

Surface area

161 acres

Shoreline

2.8 mi

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

Recreation & Access

Campgrounds

Public campgrounds near Lake Thomas

Lake Thomas0.4 km

Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes

Stays via Stay22

Stays near Lake Thomas

Compare lakeside cabins, hotels, and vacation rentals near Lake Thomas in Stevens County, Washington — 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.

Top-rated places to stay near Lake Thomas

Prices for Oct 16–18, 4 adults. Change dates on the map below.

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

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Follow Lake Thomas’s readings

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Fishing Lake Thomas

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

EPA Impairment Status

Lake Thomas is officially listed as impaired under Clean Water Act §303(d) in the 2018 EPA reporting cycle (IR category 4C).

Causes of impairment

Nuisance exotic species

Designated uses not supporting: Aquatic life.

Source: EPA ATTAINS assessment unit WA17020003003268_001_001 · Official waterbody report

Nearby Lakes in Stevens County

Gillette Lake0.7 miView →Sherry Lake1.1 miView →Lake Heritage1.1 miView →Black Lake5.9 miView →Little Twin Lakes5.9 miView →McDowell Lake—View →

Frequently asked questions about Lake Thomas

Where is Lake Thomas?: Lake Thomas is a lake in Stevens County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.
What is the water quality of Lake Thomas?: Lake Thomas in Stevens County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 161 acres.
Is Lake Thomas safe to swim in?: Nutrient and algae readings are not a swimming clearance. Lake Thomas is listed impaired under Clean Water Act §303(d) (IR 4C) for nuisance exotic species. Check local advisories before you swim.
Are there campgrounds on Lake Thomas?: Lake Thomas has 1 public campground from USGS The National Map within 5 km, including Lake Thomas. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.