Mahon Reservoir
Harney County, Oregon100 acresView mapDirections
No nutrient or algae sampling on record from Oregon DEQ for this lake.
Mahon Reservoir in Harney County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 100 acres.
Mahon Reservoir is a 100-acre lake in Harney 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 Mahon 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 Mahon Reservoir
These are the measurements Oregon DEQ publishes for Mahon 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 Mahon Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
100 acres
Shoreline
2.2 mi
No bathymetric survey has been published for Mahon Reservoir, so its depth is not documented here.
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Frequently asked questions about Mahon Reservoir
Where is Mahon Reservoir?
- Mahon Reservoir is a lake in Harney County, Oregon. Its water-quality measurements are published by Oregon DEQ and shown on this page as reported.
What is the water quality of Mahon Reservoir?
- Mahon Reservoir in Harney County, Oregon has water-quality measurements published by Oregon DEQ, shown here as reported. Surface area: 100 acres.
Is Mahon 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 Mahon Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.