Ochoco Reservoir
Crook County, Oregon970 acresView mapDirections
No nutrient or algae sampling on record from Oregon DEQ for this lake.
- Impaired · Mercury
- 80 ft max depth
Ochoco Reservoir in Crook County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Maximum depth: 80.4 ft. Surface area: 970 acres.
Ochoco Reservoir is a 970-acre lake in Crook County, Oregon with a maximum depth of 80 feet.
Source: EPA Water Quality Portal sampling records, Oregon DEQ. Methodology: how these readings are compared.
What Ochoco Reservoir is good for
From access and monitoring records, not editorial picks.
- Deep water80.4 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Ochoco Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, temperature. Check local advisories before you swim.
Whether Ochoco Reservoir 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 Ochoco Reservoir
These are the measurements Oregon DEQ publishes for Ochoco Reservoir, 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 Ochoco Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
80.4 ft
Surface area
970 acres
Shoreline
8.9 mi
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Fishing Ochoco Reservoir
EPA Impairment Status
Ochoco Reservoir 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.
Source: EPA ATTAINS assessment unit OR_LK_1707030504_05_100109 · Official waterbody report
Nearby Lakes in Crook County
Frequently asked questions about Ochoco Reservoir
Where is Ochoco Reservoir?
- Ochoco Reservoir is a lake in Crook County, Oregon. Its water-quality measurements are published by Oregon DEQ and shown on this page as reported.
What is the water quality of Ochoco Reservoir?
- Ochoco Reservoir in Crook County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Maximum depth: 80.4 ft. Surface area: 970 acres.
Is Ochoco Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Ochoco Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for mercury, temperature. Check local advisories before you swim.
How deep is Ochoco Reservoir?
- Ochoco Reservoir has a maximum depth of 80.4 feet. The lake covers 970 acres.
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Where this data comes from
Measurements for Ochoco Reservoir 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