USGS Streamgage 14033500
Umatilla River near Umatilla, OR
Umatilla River near Umatilla, OR is USGS streamgage 14033500 in Oregon, monitoring river discharge in hydrologic subbasin 17070103. It drains a watershed of about 2,290 square miles. Discharge records at this site go back to 1903. Typical flow runs near 16.1 cfs in July and 991.9 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Oregon
- Drainage area
- 2,290 sq mi
- Subbasin (HUC-8)
- 17070103
- Coordinates
- 45.90269, -119.32708
- USGS site number
- 14033500
- Records begin
- 1903-11-01 (123 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 122 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 | 121.7 | 418.3 | 1,693.2 | |
| February | 176.4 | 583.2 | 2,189.7 | |
| March | 258.6 | 889.8 | 2,562.3 | |
| April | 224 | 991.9 | 2,762 | |
| May | 21 | 401.9 | 1,733.9 | |
| June | 5.2 | 76.4 | 530.1 | |
| July | 1.8 | 16.1 | 109 | |
| August | 1.5 | 23.4 | 99.9 | |
| September | 3.4 | 45.4 | 150.3 | |
| October | 9.6 | 98.9 | 245.4 | |
| November | 66.2 | 182.5 | 495.6 | |
| December | 101.6 | 300.4 | 1,173.4 |
All values in cubic feet per second (cfs).