USGS Streamgage 13057132
Great Western Spillback near Idaho Falls, ID
Great Western Spillback near Idaho Falls, ID is USGS streamgage 13057132 in Idaho, monitoring river discharge in hydrologic subbasin 17040201. Discharge records at this site go back to 1987. Typical flow runs near 119.7 cfs in July and 57.3 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Idaho
- Subbasin (HUC-8)
- 17040201
- Coordinates
- 43.60083, -112.06194
- USGS site number
- 13057132
- Records begin
- 1987-09-30 (39 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 39 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 | 0 | 0 | 0 | |
| February | 0 | 0 | 1.8 | |
| March | 0 | 0 | 1.9 | |
| April | 0 | 57.3 | 179.7 | |
| May | 59.9 | 130.5 | 238.2 | |
| June | 61.7 | 115.4 | 212.1 | |
| July | 76.5 | 119.7 | 182.6 | |
| August | 89.8 | 145.1 | 208.3 | |
| September | 94 | 154.7 | 234.9 | |
| October | 23.8 | 81.9 | 181.6 | |
| November | 0 | 0 | 0.9 | |
| December | 0 | 0 | 0 |
All values in cubic feet per second (cfs).