| Station: | Sidney, Montana | Continent: | North America | ||
| River: | Yellowstone | Major Basin : | Missouri | ||
| Country: | United States | Discharge into : | |||
| Observation Period: | 1965 - 1984 | Total Months: | 240 | ||
| Latitude (dec deg): | 47.61 N | Area (km2): | 178977 | ||
| Longitude (dec deg): | 104.16 W | Elevation (m): | 573 | ||
| Annual Discharge: (m3/s): | 390.8 | (km3/yr): | 12.3 | ||
| Annual Runoff: (l/s/km2): | 2.2 | (mm/yr): | 68.9 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 201.6 | 247.8 | 366.8 | 300.2 | 529.1 | 1071.3 | 737.2 | 269.0 | 236.8 | 273.1 | 246.7 | 206.9 |
| km3/mo | 0.5 | 0.6 | 1.0 | 0.8 | 1.4 | 2.8 | 2.0 | 0.7 | 0.6 | 0.7 | 0.6 | 0.6 |
| mm/mo | 3.0 | 3.3 | 5.5 | 4.3 | 7.9 | 15.5 | 11.0 | 4.0 | 3.4 | 4.1 | 3.6 | 3.1 |
| l/s/km2 | 1.1 | 1.4 | 2.0 | 1.7 | 3.0 | 6.0 | 4.1 | 1.5 | 1.3 | 1.5 | 1.4 | 1.2 |
