USGS Streamgage 14105700
Columbia River at the Dalles, OR
Columbia River at the Dalles, OR is USGS streamgage 14105700 in Oregon, monitoring river discharge in hydrologic subbasin 17070105. It drains a watershed of about 237,000 square miles. Discharge records at this site go back to 1858. Typical flow runs near 261,290.3 cfs in July and 192,966.7 cfs in April, with the higher of the two arriving in July.
Gauge details
- State
- Oregon
- Drainage area
- 237,000 sq mi
- Subbasin (HUC-8)
- 17070105
- Coordinates
- 45.60828, -121.18992
- USGS site number
- 14105700
- Records begin
- 1858-01-01 (168 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 146 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 | 66,367.7 | 114,871 | 196,387.1 | |
| February | 67,520.7 | 125,069 | 212,103.4 | |
| March | 83,041.9 | 136,612.9 | 233,000 | |
| April | 123,266.7 | 192,966.7 | 311,000 | |
| May | 202,871 | 320,000 | 482,677.4 | |
| June | 198,333.3 | 394,200 | 634,200 | |
| July | 142,871 | 261,290.3 | 435,516.1 | |
| August | 113,129 | 160,000 | 229,387.1 | |
| September | 88,820 | 111,866.7 | 152,666.7 | |
| October | 77,951.6 | 100,671 | 134,516.1 | |
| November | 75,883.3 | 108,980 | 147,366.7 | |
| December | 70,277.4 | 114,903.2 | 174,451.6 |
All values in cubic feet per second (cfs).