USGS Streamgage 09132500
North Fork Gunnison River near Somerset, CO
North Fork Gunnison River near Somerset, CO is USGS streamgage 09132500 in Colorado, monitoring river discharge in hydrologic subbasin 14020004. It drains a watershed of about 525 square miles. Discharge records at this site go back to 1933. Typical flow runs near 324.6 cfs in July and 579.9 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Colorado
- Drainage area
- 525 sq mi
- Gauge elevation
- 6,093 ft
- Subbasin (HUC-8)
- 14020004
- Coordinates
- 38.92582, -107.43422
- USGS site number
- 09132500
- Records begin
- 1933-10-01 (93 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 93 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 | 39.1 | 60.4 | 94.3 | |
| February | 40 | 62.9 | 106 | |
| March | 61 | 113 | 310.8 | |
| April | 234.8 | 579.9 | 1,385.1 | |
| May | 715.5 | 1,651.9 | 3,215.2 | |
| June | 470.5 | 1,211.9 | 2,600.3 | |
| July | 183.5 | 324.6 | 867.7 | |
| August | 86 | 225.9 | 279.5 | |
| September | 58.8 | 149.9 | 246.8 | |
| October | 52.7 | 83.9 | 211.7 | |
| November | 47.6 | 76.2 | 150.3 | |
| December | 42.6 | 64 | 114.1 |
All values in cubic feet per second (cfs).