Where is Upper Glaston Lake?

Upper Glaston 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.

Upper Glaston Lake

Sweet Grass County, Montana357 acresView map Directions

No nutrient or algae sampling on record from Montana DEQ for this lake.

Area

357 acres

Surface area

Shoreline

5.5 mi

Measured length

See the measurements Directions Where to stay

Upper Glaston Lake in Sweet Grass County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 357 acres.

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Upper Glaston Lake is a 357-acre lake in Sweet Grass County, Montana.

Source: EPA Water Quality Portal sampling records, Montana DEQ. Methodology: how these readings are compared.

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.

Whether Upper Glaston 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.

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Water quality measurements for Upper Glaston Lake

These are the measurements Montana DEQ publishes for Upper Glaston 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 Upper Glaston Lake

Answers come straight from the public measurements and survey records on this page.

Lake Details

Surface area

357 acres

Shoreline

5.5 mi

No bathymetric survey has been published for Upper Glaston Lake, so its depth is not documented here.

Stays via Stay22

Stays near Upper Glaston Lake

Compare lakeside cabins, hotels, and vacation rentals near Upper Glaston Lake in Sweet Grass County, Montana — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

Top-rated places to stay near Upper Glaston Lake

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Fishing Upper Glaston Lake

→ Upper Glaston Lake fishing regulations (limits, seasons, special rules)

Nearby Lakes in Sweet Grass County

Glass Lindsay Lakes Lower Reservoir2.2 miView →Lavold Reservoir6.8 miView →Rein Lake20.1 miView →Lightning Lake—View →Jay Lake—View →Lake Pinchot—View →

Frequently asked questions about Upper Glaston Lake

Where is Upper Glaston Lake?: Upper Glaston 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 Upper Glaston Lake?: Upper Glaston Lake in Sweet Grass County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 357 acres.
Is Upper Glaston Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.