Ruby River Reservoir
Madison County, Montana949 acresView mapDirections
No nutrient or algae sampling on record from Montana DEQ for this lake.
- 28 ft max depth
Ruby River Reservoir in Madison County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Maximum depth: 28 ft. Surface area: 949 acres.
Ruby River Reservoir is a 949-acre lake in Madison County, Montana with a maximum depth of 28 feet.
Source: EPA Water Quality Portal sampling records, Montana DEQ. Methodology: how these readings are compared.
What Ruby River 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 Ruby River 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 Ruby River Reservoir
These are the measurements Montana DEQ publishes for Ruby River 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 Ruby River Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
28 ft
Surface area
949 acres
Shoreline
9.4 mi
Recreation & Access
Public campgrounds near Ruby River Reservoir
- Ruby Reservoir Rec Site1.0 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 Ruby River Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Ruby River Reservoir in Madison 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 Ruby River 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 Ruby River Reservoir’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Ruby River Reservoir
Nearby Lakes in Madison County
Frequently asked questions about Ruby River Reservoir
Where is Ruby River Reservoir?
- Ruby River Reservoir is a lake in Madison County, Montana. Its water-quality measurements are published by Montana DEQ and shown on this page as reported.
What is the water quality of Ruby River Reservoir?
- Ruby River Reservoir in Madison County, Montana has water-quality measurements published by Montana DEQ, shown here as reported. Maximum depth: 28 ft. Surface area: 949 acres.
Is Ruby River Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Ruby River Reservoir?
- Ruby River Reservoir has a maximum depth of 28 feet. The lake covers 949 acres.
Are there campgrounds on Ruby River Reservoir?
- Ruby River Reservoir has 1 public campground from USGS The National Map within 5 km, including Ruby Reservoir Rec Site. 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.
Explore Ruby River Reservoir across LakeQuality
More lakes in Montana
Other Lakes in Montana
Where this data comes from
Measurements for Ruby River 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