Twin Reservoir
Blaine County, Montana28 acresView mapDirections
No nutrient or algae sampling on record from Montana DEQ for this lake.
Twin Reservoir in Blaine County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 28 acres.
Twin Reservoir is a 28-acre lake in Blaine 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 Twin 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 Twin Reservoir
These are the measurements Montana DEQ publishes for Twin 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.
Ask about Twin Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
28 acres
Shoreline
2.4 mi
No bathymetric survey has been published for Twin Reservoir, so its depth is not documented here.
Stays via Stay22
Stays near Twin Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Twin Reservoir in Blaine 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 Twin Reservoir
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Montana’s top lakes →
Follow Twin Reservoir’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Twin Reservoir
Nearby Lakes in Blaine County
Frequently asked questions about Twin Reservoir
Where is Twin Reservoir?
- Twin Reservoir is a lake in Blaine County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.
What is the water quality of Twin Reservoir?
- Twin Reservoir in Blaine County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 28 acres.
Is Twin Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Twin Reservoir across LakeQuality
More lakes in Montana
Other Lakes in Montana
Where this data comes from
Measurements for Twin Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.