Jay Lake
Sweet Grass County, Montana27 acresView mapDirections
No nutrient or algae sampling on record from Montana DEQ for this lake.
- 35 ft max depth
Jay Lake in Sweet Grass County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Maximum depth: 35 ft. Surface area: 27 acres.
Jay Lake is a 27-acre lake in Sweet Grass County, Montana with a maximum depth of 35 feet.
Source: EPA Water Quality Portal sampling records, Montana DEQ. Methodology: how these readings are compared.
What Jay Lake is good for
From access and monitoring records, not editorial picks.
- Deep water35 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 Jay 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 Jay Lake
These are the measurements Montana DEQ publishes for Jay 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 Jay Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
35 ft
Surface area
27 acres
Shoreline
0.9 mi
Stays via Stay22
Stays near Jay Lake
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Fishing Jay Lake
Nearby Lakes in Sweet Grass County
Frequently asked questions about Jay Lake
Where is Jay Lake?
- Jay 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 Jay Lake?
- Jay Lake in Sweet Grass County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Maximum depth: 35 ft. Surface area: 27 acres.
Is Jay Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Jay Lake?
- Jay Lake has a maximum depth of 35 feet. The lake covers 27 acres.
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Where this data comes from
Measurements for Jay Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.