USGS Streamgage 12472800
Columbia River below Priest Rapids Dam, WA
Columbia River below Priest Rapids Dam, WA is USGS streamgage 12472800 in Washington, monitoring river discharge in hydrologic subbasin 17020016. It drains a watershed of about 96,000 square miles. Discharge records at this site go back to 1917. Typical flow runs near 138,322.6 cfs in July and 111,413.3 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Washington
- Drainage area
- 96,000 sq mi
- Gauge elevation
- 432 ft
- Subbasin (HUC-8)
- 17020016
- Coordinates
- 46.62871, -119.86474
- USGS site number
- 12472800
- Records begin
- 1917-06-23 (109 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 67 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 | 68,325.8 | 107,229 | 152,741.9 | |
| February | 69,437.9 | 103,127.6 | 153,862.1 | |
| March | 64,890.3 | 98,774.2 | 157,064.5 | |
| April | 66,306.7 | 111,413.3 | 181,433.3 | |
| May | 100,496.8 | 157,032.3 | 244,032.3 | |
| June | 101,663.3 | 175,066.7 | 315,866.7 | |
| July | 83,896.8 | 138,322.6 | 235,322.6 | |
| August | 72,851.6 | 107,106.5 | 150,709.7 | |
| September | 50,500 | 74,670 | 102,433.3 | |
| October | 53,267.7 | 75,612.9 | 103,196.8 | |
| November | 63,156.7 | 91,460 | 115,200 | |
| December | 66,658.1 | 100,822.6 | 140,871 |
All values in cubic feet per second (cfs).