Army Corps of Engineers · Montana
Flat Lake
Army Corps of Engineers · Montana, United States
- Sites
- 8
- Hookups
- 8 no hookups
- Drinking water
- No
- Restrooms
- Yes
- Showers
- No
- Dump station
- No
- Elevation
- 2,257 ft
- Dark sky
- Bortle class 1
- Cell coverage
- Verizon weak · T-Mobile good · AT&T good (carriers' 4G LTE filings to the FCC, 2025-12; not measured here)
- Lake
- Fort Peck Project
- Nearest town
- Fort Peck
- Activities
- Boating, Picnic
Season dates aren't confirmed for this campground yet - opening and closing dates haven't been verified. Check the operator's page or call ahead before you plan a trip.
Site map
The imagery of the campground. Press and hold the map to drop your own pins and notes; the operator publishes no site points here. Your ratings, notes, pins and photos are kept with the campground on your Saved list, the same list the camping map and the drive page keep.
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About
Flat Lake is a primitive U.S. Army Corps of Engineers recreation area on Fort Peck Lake, about 7 miles from Fort Peck, MT by road. Offers 8 campsites with a boat dock/ramp, picnic shelter, and vault toilets; no water, electric hookups, showers, or dump station. Part of Fort Peck Project, Omaha District.
Weather, month by month
| Month | Typical high | Typical low | Coldest night | Hottest day | Years with a night below 32°F |
|---|---|---|---|---|---|
| January | 27° | 11° | -19° | 45° | 11 of 11 |
| February | 31° | 14° | -26° | 51° | 11 of 11 |
| March | 40° | 25° | 3° | 57° | 11 of 11 |
| April | 49° | 34° | 15° | 74° | 9 of 11 |
| May | 62° | 46° | 35° | 82° | 0 of 11 |
| June | 74° | 58° | 50° | 100° | 0 of 11 |
| July | 85° | 66° | 56° | 103° | 0 of 11 |
| August | 83° | 64° | 54° | 96° | 0 of 11 |
| September | 72° | 55° | 43° | 88° | 0 of 11 |
| October | 56° | 42° | 23° | 76° | 2 of 10 |
| November | 45° | 32° | 7° | 58° | 8 of 10 |
| December | 33° | 21° | -3° | 50° | 10 of 10 |
Mid-month figures from 2016–2026 of daily weather at this spot (ERA5 reanalysis via Open-Meteo, CC BY 4.0), in °F. Typical is the median; coldest and hottest are the extremes seen.
Nearby campgrounds
- Downstream (MT) · Army Corps of Engineers · 3 mi · 94 sites
- Floodplain · Army Corps of Engineers · 3 mi · 5 sites
- Roundhouse Point · Army Corps of Engineers · 4 mi · 13 sites
- West End Campground · Army Corps of Engineers · 6 mi
- West End Tent and Trailer Campground · Army Corps of Engineers · 6 mi · 33 sites
All public campgrounds in Montana · Every state and province · Facts read from the operator 2026-08-22. Confirm fees, rules and current status with the operator before you go.