Big Dam is a lake in Toole County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.

Big Dam

Toole County, Montana123 acresView map Directions

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

Area

123 acres

Surface area

See the measurements Directions Where to stay

Big Dam in Toole County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 123 acres.

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Big Dam is a 123-acre lake in Toole 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 Big Dam 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 Big Dam

These are the measurements Montana DEQ publishes for Big Dam, 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

123 acres

No bathymetric survey has been published for Big Dam, so its depth is not documented here.

Stays via Stay22

Stays near Big Dam

Compare lakeside cabins, hotels, and vacation rentals near Big Dam in Toole 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 Big Dam

Prices for Oct 16–18, 4 adults. Change dates on the map below.

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Fishing Big Dam

→ Big Dam fishing regulations (limits, seasons, special rules)

Nearby Lakes in Toole County

Mc Carters Lake12.1 miView →The Pot Hole20.4 miView →Dunkirk Reservoir22.3 miView →Fowler Reservoir—View →Perkins Lake—View →Melcott Reservoir—View →

Frequently asked questions about Big Dam

Where is Big Dam?: Big Dam is a lake in Toole County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.
What is the water quality of Big Dam?: Big Dam in Toole County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 123 acres.
Is Big Dam safe to swim in?: Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.