Facility · North Dakota ·
Managed by the USDA Forest Service
Cedar River National Grassland (NF) · Open Access
Cedar River National Grassland is located in Sioux County and Grant County in southern North Dakota, United States. It has a land area of 6,717 acres (2,718 ha). The portion in Sioux County lies within the Standing Rock Indian Reservation. Within the grassland are topographic features such as level plains and rolling hills. Dry streams and some small flowing streams exist throughout the grasslands.
The grassland is administered by the Forest Service as part of the Dakota Prairie Grasslands from offices in Bismarck, North Dakota. There are local ranger district offices (shared with Grand River National Grassland) in Lemmon, South Dakota.
45.95520, -101.84430 · 45°57'18.7"N 101°50'39.5"W
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | — | — | — | — | — | — | — | — | — | — | — | — |
| Low °F | — | — | — | — | — | — | — | — | — | — | — | — |
| Precip in | 0.3 | 0.5 | 0.9 | 1.8 | 3.0 | 3.2 | 2.8 | 1.9 | 1.7 | 1.6 | 0.8 | 0.4 |
1991–2020 averages from the nearest NOAA station, 8.3 mi away — not measured at the facility itself, and elevation can make a real difference over that distance.
Recreation.gov last updated this record on 2026-02-25.
Facility information and photographs from Recreation.gov (RIDB). SpotOpened is not affiliated with Recreation.gov or any federal agency.
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