USGS Streamgage 12398600
Pend Oreille River at International Boundary
Pend Oreille River at International Boundary is USGS streamgage 12398600 in Washington, monitoring river discharge in hydrologic subbasin 17010216. It drains a watershed of about 25,200 square miles. Discharge records at this site go back to 1962. Typical flow runs near 25,780.6 cfs in July and 27,790 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Washington
- Drainage area
- 25,200 sq mi
- Gauge elevation
- 1,758 ft
- Subbasin (HUC-8)
- 17010216
- Coordinates
- 48.99881, -117.35358
- USGS site number
- 12398600
- Records begin
- 1962-12-01 (64 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 64 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 | 10,426.8 | 17,196.8 | 23,932.3 | |
| February | 10,622.4 | 17,369 | 27,796.6 | |
| March | 11,651 | 20,419.4 | 33,529 | |
| April | 13,983 | 27,790 | 47,226.7 | |
| May | 24,925.8 | 45,048.4 | 78,567.7 | |
| June | 22,976.7 | 52,666.7 | 98,706.7 | |
| July | 12,271 | 25,780.6 | 42,816.1 | |
| August | 6,950.6 | 11,492.3 | 17,987.1 | |
| September | 8,167 | 13,625.7 | 20,353.3 | |
| October | 16,532.3 | 22,977.4 | 27,971 | |
| November | 13,236.7 | 20,156.7 | 28,273.3 | |
| December | 11,463.2 | 17,183.9 | 24,412.9 |
All values in cubic feet per second (cfs).