Marion Lake
Linn County, Oregon353 acresView mapDirections
No nutrient or algae sampling on record from Oregon DEQ for this lake.
- Impaired · Algal growth
- 180 ft max depth
Marion Lake in Linn County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Maximum depth: 180 ft. Surface area: 353 acres.
Marion Lake is a 353-acre lake in Linn County, Oregon with a maximum depth of 180 feet.
Source: EPA Water Quality Portal sampling records, Oregon DEQ. Methodology: how these readings are compared.
What Marion Lake is good for
From access and monitoring records, not editorial picks.
- Deep water180 ft surveyed max depth
Swimming conditions
No readingRecreation use not supported
Nutrient and algae readings are not a swimming clearance. Marion Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.
Whether Marion 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 Marion Lake
These are the measurements Oregon DEQ publishes for Marion 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 Marion Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
180 ft
Surface area
353 acres
Shoreline
4.3 mi
Stays via Stay22
Stays near Marion Lake
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Fishing Marion Lake
EPA Impairment Status
Marion 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, Fish consumption, Recreation, Other.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit OR_LK_1709000502_02_100767 · Official waterbody report
Nearby Lakes in Linn County
Frequently asked questions about Marion Lake
Where is Marion Lake?
- Marion Lake is a lake in Linn County, Oregon. Its water-quality measurements are published by Oregon DEQ and shown on this page as reported.
What is the water quality of Marion Lake?
- Marion Lake in Linn County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Maximum depth: 180 ft. Surface area: 353 acres.
Is Marion Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Marion Lake is listed impaired under Clean Water Act §303(d) (IR 5) for algal growth. Check local advisories before you swim.
How deep is Marion Lake?
- Marion Lake has a maximum depth of 180 feet. The lake covers 353 acres.
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Where this data comes from
Measurements for Marion 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