South Beaver Reservoir
Valley County, Montana65 acresView mapDirections
No nutrient or algae sampling on record from Montana DEQ for this lake.
South Beaver Reservoir in Valley County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 65 acres.
South Beaver Reservoir is a 65-acre lake in Valley County, Montana.
Source: EPA Water Quality Portal sampling records, Montana 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 South Beaver Reservoir is safe to swim in today is a call for the Montana Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for South Beaver Reservoir
These are the measurements Montana DEQ publishes for South Beaver 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
65 acres
Shoreline
1.9 mi
No bathymetric survey has been published for South Beaver Reservoir, so its depth is not documented here.
Stays via Stay22
Stays near South Beaver Reservoir
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Frequently asked questions about South Beaver Reservoir
Where is South Beaver Reservoir?
- South Beaver Reservoir is a lake in Valley County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.
What is the water quality of South Beaver Reservoir?
- South Beaver Reservoir in Valley County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 65 acres.
Is South Beaver 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 South Beaver Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.