Marsh Unit One
Grant County, Washington29 acresView mapDirections
No nutrient or algae sampling on record from Washington Ecology for this lake.
Marsh Unit One in Grant County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 29 acres.
Marsh Unit One is a 29-acre lake in Grant County, Washington.
Source: EPA Water Quality Portal sampling records, WA Ecology. 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 Marsh Unit One is safe to swim in today is a call for the Washington State Department of Ecology and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Marsh Unit One
These are the measurements Washington Ecology publishes for Marsh Unit One, 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 Marsh Unit One
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
29 acres
Shoreline
1.8 mi
No bathymetric survey has been published for Marsh Unit One, so its depth is not documented here.
Stays via Stay22
Stays near Marsh Unit One
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Frequently asked questions about Marsh Unit One
Where is Marsh Unit One?
- Marsh Unit One is a lake in Grant County, Washington. Its water-quality measurements are published by Washington Ecology and shown on this page as reported.
What is the water quality of Marsh Unit One?
- Marsh Unit One in Grant County, Washington has water-quality measurements published by Washington Ecology, shown here as reported. Surface area: 29 acres.
Is Marsh Unit One 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 Marsh Unit One come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.