Clark Reservoir
Prairie County, Montana37 acresView mapDirections
No nutrient or algae sampling on record from Montana DEQ for this lake.
Clark Reservoir in Prairie County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 37 acres.
Clark Reservoir is a 37-acre lake in Prairie County, Montana.
Source: EPA Water Quality Portal sampling records, Montana DEQ. Methodology: how these readings are compared.
What Clark Reservoir is good for
From access and monitoring records, not editorial picks.
- Camping1 public campground nearby
Swimming conditions
No readingNot rated
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Clark 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 Clark Reservoir
These are the measurements Montana DEQ publishes for Clark 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 Clark Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
37 acres
No bathymetric survey has been published for Clark Reservoir, so its depth is not documented here.
Recreation & Access
Public campgrounds near Clark Reservoir
- South Fork Reservoir2.8 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 Clark Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Clark Reservoir in Prairie 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 Clark Reservoir
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Fishing Clark Reservoir
Nearby Lakes in Prairie County
Frequently asked questions about Clark Reservoir
Where is Clark Reservoir?
- Clark Reservoir is a lake in Prairie County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.
What is the water quality of Clark Reservoir?
- Clark Reservoir in Prairie County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 37 acres.
Is Clark Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there campgrounds on Clark Reservoir?
- Clark Reservoir has 1 public campground from USGS The National Map within 5 km, including South Fork Reservoir. 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 Clark Reservoir 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