Tenmile Lake
Coos County, Oregon1,139 acresView mapDirections
No nutrient or algae sampling on record from Oregon DEQ for this lake.
- Impaired · Algal growth
- 22 ft max depth
Tenmile Lake in Coos County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Maximum depth: 22 ft. Surface area: 1139 acres.
Tenmile Lake is a 1,139-acre lake in Coos County, Oregon with a maximum depth of 22 feet (10-foot average).
Source: EPA Water Quality Portal sampling records, Oregon DEQ. Methodology: how these readings are compared.
What Tenmile Lake is good for
From access and monitoring records, not editorial picks.
- Big water1,139 acres
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Tenmile Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury, oxygen depletion (low DO). Check local advisories before you swim.
Whether Tenmile Lake is safe to swim in today is a call for the Oregon Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Tenmile Lake
These are the measurements Oregon DEQ publishes for Tenmile 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 Tenmile Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
22 ft
Average depth
9.8 ft
Surface area
1,139 acres
Shoreline
23 mi
Stays via Stay22
Stays near Tenmile Lake
Compare lakeside cabins, hotels, and vacation rentals near Tenmile Lake in Coos County, Oregon — 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 Tenmile Lake
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.
Planning a whole trip? See where to stay at Oregon’s top lakes →
Follow Tenmile Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Tenmile Lake
EPA Impairment Status
Tenmile 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: Drinking water, Aquatic life, Fish consumption, Recreation, Other.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit OR_LK_1710030404_02_100224 · Official waterbody report
Nearby Lakes in Coos County
Frequently asked questions about Tenmile Lake
Where is Tenmile Lake?
- Tenmile Lake is a lake in Coos County, Oregon. Its water-quality measurements are published by Oregon DEQ and shown on this page as reported.
What is the water quality of Tenmile Lake?
- Tenmile Lake in Coos County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Maximum depth: 22 ft. Surface area: 1139 acres.
Is Tenmile Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Tenmile Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth, mercury, oxygen depletion (low DO). Check local advisories before you swim.
How deep is Tenmile Lake?
- Tenmile Lake has a maximum depth of 22 feet and an average depth of 9.8 feet. The lake covers 1139 acres.
Explore Tenmile Lake across LakeQuality
More lakes in Oregon
Other Lakes in Oregon
Where this data comes from
Measurements for Tenmile 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