Where is Lower Red Rock Lake?

Lower Red Rock Lake is a lake in Beaverhead County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.

Are there campgrounds on Lower Red Rock Lake?

Lower Red Rock Lake has 1 public campground from USGS The National Map within 5 km, including River Marsh Campground. 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.

Lower Red Rock Lake

Beaverhead County, Montana2,218 acresView map Directions

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

Area

2,218 acres

Surface area

Shoreline

29.3 mi

Measured length

Impaired · Hydrologic alteration

See the measurements Directions Where to stay

Lower Red Rock Lake in Beaverhead County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 2218 acres.

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Lower Red Rock Lake is a 2,218-acre lake in Beaverhead County, Montana.

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

What Lower Red Rock Lake is good for

From access and monitoring records, not editorial picks.

Camping1 public campground nearby
Big water2,218 acres

Swimming conditions

No reading

Not rated

Nutrient and algae readings are not a swimming clearance. Lower Red Rock Lake is listed impaired under Clean Water Act §303(d) (IR 5) for hydrologic alteration, sediment / turbidity. Check local advisories before you swim.

Whether Lower Red Rock 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 Lower Red Rock Lake

These are the measurements Montana DEQ publishes for Lower Red Rock 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 Red Rock Lake

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

Lake Details

Surface area

2,218 acres

Shoreline

29.3 mi

No bathymetric survey has been published for Lower Red Rock Lake, so its depth is not documented here.

Recreation & Access

Campgrounds

Public campgrounds near Lower Red Rock Lake

River Marsh Campground2.9 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 Red Rock Lake

Compare lakeside cabins, hotels, and vacation rentals near Lower Red Rock Lake in Beaverhead 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 Red Rock Lake

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

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Follow Lower Red Rock Lake’s readings

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Fishing Lower Red Rock Lake

→ Lower Red Rock Lake fishing regulations (limits, seasons, special rules)

EPA Impairment Status

Lower Red Rock Lake is officially listed as impaired under Clean Water Act §303(d) in the 2021 EPA reporting cycle (IR category 5).

Causes of impairment

Hydrologic alterationSediment / turbidity

Designated uses not supporting: Aquatic life.

Source: EPA ATTAINS assessment unit MT41A005_020 · Official waterbody report

Nearby Lakes in Beaverhead County

Swan Lake5.4 miView →Upper Red Rock Lake6.5 miView →Fish Creek Lake9.1 miView →Widgeon Pond9.6 miView →Elk Lake11.6 miView →Conklin Lake—View →

Frequently asked questions about Lower Red Rock Lake

Where is Lower Red Rock Lake?: Lower Red Rock Lake is a lake in Beaverhead 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 Red Rock Lake?: Lower Red Rock Lake in Beaverhead County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Surface area: 2218 acres.
Is Lower Red Rock Lake safe to swim in?: Nutrient and algae readings are not a swimming clearance. Lower Red Rock Lake is listed impaired under Clean Water Act §303(d) (IR 5) for hydrologic alteration, sediment / turbidity. Check local advisories before you swim.
Are there campgrounds on Lower Red Rock Lake?: Lower Red Rock Lake has 1 public campground from USGS The National Map within 5 km, including River Marsh Campground. 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.