USGS Streamgage 06191500
Yellowstone River at Corwin Springs, MT
Yellowstone River at Corwin Springs, MT is USGS streamgage 06191500 in Montana, monitoring river discharge in hydrologic subbasin 10070002. It drains a watershed of about 2,615 square miles. Discharge records at this site go back to 1889. Typical flow runs near 6,330 cfs in July and 1,398.3 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Montana
- Drainage area
- 2,615 sq mi
- Gauge elevation
- 5,084 ft
- Subbasin (HUC-8)
- 10070002
- Coordinates
- 45.11212, -110.79367
- USGS site number
- 06191500
- Records begin
- 1889-08-01 (137 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 137 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 600.2 | 832.4 | 1,103.5 | |
| February | 556.7 | 815.4 | 1,085.9 | |
| March | 664.2 | 913.2 | 1,173.2 | |
| April | 950.5 | 1,398.3 | 2,569 | |
| May | 2,953.5 | 5,716.8 | 10,953.9 | |
| June | 6,097 | 10,625.3 | 17,770 | |
| July | 3,297.1 | 6,330 | 10,312.3 | |
| August | 1,760 | 2,949.7 | 4,477.7 | |
| September | 1,233.3 | 1,833.3 | 2,663 | |
| October | 1,018.5 | 1,425.2 | 2,072.9 | |
| November | 847.1 | 1,152.3 | 1,561.7 | |
| December | 685.9 | 944.7 | 1,251 |
All values in cubic feet per second (cfs).