USGS Streamgage 13018750
Snake River below Flat Creek, near Jackson, WY
Snake River below Flat Creek, near Jackson, WY is USGS streamgage 13018750 in Wyoming, monitoring river discharge in hydrologic subbasin 17040103. It drains a watershed of about 2,672 square miles. Discharge records at this site go back to 1975. Typical flow runs near 5,481.3 cfs in July and 2,107.3 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Wyoming
- Drainage area
- 2,672 sq mi
- Gauge elevation
- 5,967 ft
- Subbasin (HUC-8)
- 17040103
- Coordinates
- 43.37222, -110.73861
- USGS site number
- 13018750
- Records begin
- 1975-11-12 (51 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 51 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 | 986.2 | 1,245.2 | 1,652.6 | |
| February | 1,008 | 1,233.1 | 1,690.7 | |
| March | 1,031.3 | 1,384.8 | 2,290.6 | |
| April | 1,361.3 | 2,107.3 | 4,752 | |
| May | 3,155.2 | 6,294.8 | 10,720 | |
| June | 5,882.7 | 9,565.3 | 16,993.3 | |
| July | 3,718.1 | 5,481.3 | 10,568.4 | |
| August | 2,860.3 | 3,966.5 | 5,858.1 | |
| September | 2,278 | 3,391.3 | 5,004.7 | |
| October | 1,272.3 | 1,760.6 | 2,537.7 | |
| November | 1,151.7 | 1,424.7 | 2,007 | |
| December | 1,058.3 | 1,330.3 | 1,753.2 |
All values in cubic feet per second (cfs).