Pentad Lake
Sweet Grass County, Montana30 acresView mapDirections
No nutrient or algae sampling on record from Montana DEQ for this lake.
- 58 ft max depth
Pentad Lake in Sweet Grass County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Maximum depth: 58 ft. Surface area: 30 acres.
Pentad Lake is a 30-acre lake in Sweet Grass County, Montana with a maximum depth of 58 feet (24-foot average).
Source: EPA Water Quality Portal sampling records, Montana DEQ. Methodology: how these readings are compared.
What Pentad Lake is good for
From access and monitoring records, not editorial picks.
- Deep water58 ft surveyed max depth
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Pentad Lake 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 Pentad Lake
These are the measurements Montana DEQ publishes for Pentad 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. TSI undefined.
Ask about Pentad Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
58 ft
Average depth
24 ft
Surface area
30 acres
Shoreline
1.2 mi
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Fishing Pentad Lake
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Frequently asked questions about Pentad Lake
Where is Pentad Lake?
- Pentad Lake is a lake in Sweet Grass County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.
What is the water quality of Pentad Lake?
- Pentad Lake in Sweet Grass County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Maximum depth: 58 ft. Surface area: 30 acres.
Is Pentad Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Pentad Lake?
- Pentad Lake has a maximum depth of 58 feet and an average depth of 24 feet. The lake covers 30 acres.
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Where this data comes from
Measurements for Pentad Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.