Deer Island Slough
Columbia County, Oregon46 acresView mapDirections
No nutrient or algae sampling on record from Oregon DEQ for this lake.
Deer Island Slough in Columbia County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 46 acres.
Deer Island Slough is a 46-acre lake in Columbia County, Oregon.
Source: EPA Water Quality Portal sampling records, Oregon DEQ. Methodology: how these readings are compared.
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Deer Island Slough 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 Deer Island Slough
These are the measurements Oregon DEQ publishes for Deer Island Slough, 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 Deer Island Slough
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
46 acres
Shoreline
5.7 mi
No bathymetric survey has been published for Deer Island Slough, so its depth is not documented here.
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Frequently asked questions about Deer Island Slough
Where is Deer Island Slough?
- Deer Island Slough is a lake in Columbia County, Oregon. Its water-quality measurements are published by Oregon DEQ and shown on this page as reported.
What is the water quality of Deer Island Slough?
- Deer Island Slough in Columbia County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 46 acres.
Is Deer Island Slough safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
Measurements for Deer Island Slough come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.