Lower Saint Mary Lake
Glacier County, Montana2,179 acresView mapDirections
No nutrient or algae sampling on record from Montana DEQ for this lake.
Lower Saint Mary Lake in Glacier County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 2179 acres.
Lower Saint Mary Lake is a 2,179-acre lake in Glacier County, Montana.
Source: EPA Water Quality Portal sampling records, Montana DEQ. Methodology: how these readings are compared.
What Lower Saint Mary Lake is good for
From access and monitoring records, not editorial picks.
- Camping2 public campgrounds nearby
- Big water2,179 acres
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lower Saint Mary 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 Lower Saint Mary Lake
These are the measurements Montana DEQ publishes for Lower Saint Mary 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 Lower Saint Mary Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
2,179 acres
Shoreline
17.1 mi
No bathymetric survey has been published for Lower Saint Mary Lake, so its depth is not documented here.
Recreation & Access
Public campgrounds near Lower Saint Mary Lake
- Chewing Black Bones Campground2.5 km
- Leaning Tree Campground and Cabins4.8 km
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Stays via Stay22
Stays near Lower Saint Mary Lake
Compare lakeside cabins, hotels, and vacation rentals near Lower Saint Mary Lake in Glacier 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 Lower Saint Mary Lake
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Fishing Lower Saint Mary Lake
Nearby Lakes in Glacier County
Frequently asked questions about Lower Saint Mary Lake
Where is Lower Saint Mary Lake?
- Lower Saint Mary Lake is a lake in Glacier County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.
What is the water quality of Lower Saint Mary Lake?
- Lower Saint Mary Lake in Glacier County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 2179 acres.
Is Lower Saint Mary Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there campgrounds on Lower Saint Mary Lake?
- Lower Saint Mary Lake has 2 public campgrounds from USGS The National Map within 5 km, including Chewing Black Bones Campground, Leaning Tree Campground and Cabins. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
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Where this data comes from
Measurements for Lower Saint Mary Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Public campgrounds from USGS The National Map Structures, within about 3 miles