USGS Streamgage 09119000
Tomichi Creek at Gunnison, CO
Tomichi Creek at Gunnison, CO is USGS streamgage 09119000 in Colorado, monitoring river discharge in hydrologic subbasin 14020003. It drains a watershed of about 1,061 square miles. Discharge records at this site go back to 1937. Typical flow runs near 130.9 cfs in July and 191.4 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Colorado
- Drainage area
- 1,061 sq mi
- Gauge elevation
- 7,638 ft
- Subbasin (HUC-8)
- 14020003
- Coordinates
- 38.52111, -106.94096
- USGS site number
- 09119000
- Records begin
- 1937-10-01 (89 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 89 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 | 49.1 | 64.8 | 89 | |
| February | 50.7 | 67.9 | 89.6 | |
| March | 67.6 | 99.3 | 169.5 | |
| April | 83.1 | 191.4 | 442.9 | |
| May | 79.5 | 300.3 | 744.1 | |
| June | 86 | 351 | 900.4 | |
| July | 46.3 | 130.9 | 376.2 | |
| August | 66.8 | 141.3 | 273.8 | |
| September | 32.6 | 80.3 | 171.7 | |
| October | 46.7 | 85.4 | 148.9 | |
| November | 65.2 | 94.1 | 136.7 | |
| December | 54.5 | 72.7 | 102.4 |
All values in cubic feet per second (cfs).