Ruby Lake
Yellow Medicine County, MinnesotaView mapDirections
No nutrient or algae sampling on record from Minnesota PCA for this lake.
- Limited data
Ruby Lake in Yellow Medicine County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported.
Ruby Lake is a lake in Yellow Medicine County, Minnesota.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2026-06-01. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Ruby Lake is safe to swim in today is a call for the Minnesota Pollution Control Agency and the Minnesota DNR and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Ruby Lake
These are the measurements Minnesota PCA publishes for Ruby 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.
Ask about Ruby Lake
Answers come straight from the public measurements and survey records on this page.
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Fishing Ruby Lake
Nearby Lakes in Yellow Medicine County
Frequently asked questions about Ruby Lake
Where is Ruby Lake?
- Ruby Lake is a lake in Yellow Medicine County, Minnesota. Its water-quality measurements are published by Minnesota PCA and shown on this page as reported.
What is the water quality of Ruby Lake?
- Ruby Lake in Yellow Medicine County, Minnesota has water-quality measurements published by Minnesota PCA, shown here as reported.
Is Ruby Lake 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
3 measurements from 1 monitoring station, 2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Upper Sioux Community (Tribal)
USIOUX_WQX3 samples · 2026
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.