USGS Streamgage 13057155
Snake River Ab Eagle Rock near Idaho Falls, ID
Snake River Ab Eagle Rock near Idaho Falls, ID is USGS streamgage 13057155 in Idaho, monitoring river discharge in hydrologic subbasin 17040201. It drains a watershed of about 9,533 square miles. Discharge records at this site go back to 1987. Typical flow runs near 7,134.8 cfs in July and 4,856 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Idaho
- Drainage area
- 9,533 sq mi
- Subbasin (HUC-8)
- 17040201
- Coordinates
- 43.60472, -112.05861
- USGS site number
- 13057155
- Records begin
- 1987-10-01 (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 | 1,834.5 | 2,558.4 | 5,108.7 | |
| February | 1,969 | 2,675.9 | 6,749.7 | |
| March | 2,069.7 | 2,769.7 | 11,081.3 | |
| April | 2,389 | 4,856 | 16,780 | |
| May | 5,086.5 | 9,170.3 | 20,151.6 | |
| June | 5,976.3 | 8,865.7 | 22,216.7 | |
| July | 5,691.9 | 7,134.8 | 12,674.2 | |
| August | 4,732.6 | 6,034.2 | 9,272.3 | |
| September | 3,721.3 | 4,901.3 | 6,770.3 | |
| October | 2,362.6 | 3,243.9 | 4,691.6 | |
| November | 2,333 | 2,965 | 5,146.7 | |
| December | 1,910 | 2,714.2 | 5,062.9 |
All values in cubic feet per second (cfs).