Little Grassy Reservoir
Malheur County, Oregon334 acresView mapDirections
No nutrient or algae sampling on record from Oregon DEQ for this lake.
Little Grassy Reservoir in Malheur County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 334 acres.
Little Grassy Reservoir is a 334-acre lake in Malheur 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 Little Grassy 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 Little Grassy Reservoir
These are the measurements Oregon DEQ publishes for Little Grassy 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.
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Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
334 acres
No bathymetric survey has been published for Little Grassy Reservoir, so its depth is not documented here.
Stays via Stay22
Stays near Little Grassy Reservoir
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Frequently asked questions about Little Grassy Reservoir
Where is Little Grassy Reservoir?
- Little Grassy Reservoir is a lake in Malheur County, Oregon. Its water-quality measurements are published by Oregon DEQ and shown on this page as reported.
What is the water quality of Little Grassy Reservoir?
- Little Grassy Reservoir in Malheur County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 334 acres.
Is Little Grassy Reservoir 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 Little Grassy Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.