USGS Streamgage 12086500
Nisqually River at La Grande, WA
Nisqually River at La Grande, WA is USGS streamgage 12086500 in Washington, monitoring river discharge in hydrologic subbasin 17110015. It drains a watershed of about 292 square miles. Discharge records at this site go back to 1906. Typical flow runs near 1,002.4 cfs in July and 1,340 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 292 sq mi
- Gauge elevation
- 502 ft
- Subbasin (HUC-8)
- 17110015
- Coordinates
- 46.83927, -122.32928
- USGS site number
- 12086500
- Records begin
- 1906-10-01 (120 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 120 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 | 900.6 | 1,900.6 | 3,222.6 | |
| February | 811.9 | 1,821.4 | 3,017.6 | |
| March | 757.8 | 1,455.8 | 2,407.1 | |
| April | 827.6 | 1,340 | 2,314.3 | |
| May | 817.7 | 1,303.9 | 2,277.7 | |
| June | 711.5 | 1,102.7 | 2,032 | |
| July | 567.9 | 1,002.4 | 1,352.3 | |
| August | 503.5 | 804.6 | 1,041.5 | |
| September | 457.4 | 790.9 | 1,115.7 | |
| October | 478.8 | 973.1 | 1,715.5 | |
| November | 617.7 | 1,376 | 2,669.3 | |
| December | 821.7 | 1,886.8 | 3,271 |
All values in cubic feet per second (cfs).