USGS Streamgage 09057500
Blue River below Green Mountain Reservoir, CO
Blue River below Green Mountain Reservoir, CO is USGS streamgage 09057500 in Colorado, monitoring river discharge in hydrologic subbasin 14010002. It drains a watershed of about 597 square miles. Discharge records at this site go back to 1937. Typical flow runs near 600.1 cfs in July and 302.8 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Colorado
- Drainage area
- 597 sq mi
- Gauge elevation
- 7,736 ft
- Subbasin (HUC-8)
- 14010002
- Coordinates
- 39.88026, -106.33392
- USGS site number
- 09057500
- Records begin
- 1937-10-01 (89 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 84 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 | 147 | 254.3 | 458.9 | |
| February | 140.6 | 245.5 | 437.6 | |
| March | 118.6 | 246.6 | 497.4 | |
| April | 86.5 | 302.8 | 662.3 | |
| May | 59.3 | 306.8 | 1,156.2 | |
| June | 61 | 592.9 | 1,686.3 | |
| July | 188 | 600.1 | 1,617.1 | |
| August | 344.8 | 578.6 | 926.9 | |
| September | 283.7 | 515.2 | 809 | |
| October | 191.5 | 384.9 | 724.5 | |
| November | 142.7 | 270.9 | 422 | |
| December | 138.5 | 269.8 | 458.4 |
All values in cubic feet per second (cfs).
Other gauges in this subbasin
- Monte Cristo Diversion near Hoosier Pass, CO
- Bemrose-Hoosier Diversion near Hoosier Pass, CO
- McCullough-Sp-Crys-Diversion near Hoosier Pass, CO
- Blue River at Blue River, CO
- Blue River near Dillon, CO
- Snake River near Montezuma, CO
- Keystone Gulch near Dillon, CO
- Tenmile Creek below North Tenmile C, at Frisco, CO