Rattlesnake Reservoir
Yellowstone County, Montana184 acresView mapDirections
No nutrient or algae sampling on record from Montana DEQ for this lake.
Rattlesnake Reservoir in Yellowstone County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 184 acres.
Rattlesnake Reservoir is a 184-acre lake in Yellowstone 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 Rattlesnake 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 Rattlesnake Reservoir
These are the measurements Montana DEQ publishes for Rattlesnake 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
184 acres
Shoreline
3.3 mi
No bathymetric survey has been published for Rattlesnake Reservoir, so its depth is not documented here.
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Frequently asked questions about Rattlesnake Reservoir
Where is Rattlesnake Reservoir?
- Rattlesnake Reservoir is a lake in Yellowstone County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.
What is the water quality of Rattlesnake Reservoir?
- Rattlesnake Reservoir in Yellowstone County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 184 acres.
Is Rattlesnake 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 Rattlesnake Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.