| Station: | The Dalles, Oregon | Continent: | North America | ||
| River: | Columbia | Major Basin : | Pacific Ocean | ||
| Country: | United States | Discharge into : | Pacific Ocean | ||
| Observation Period: | 1878 - 1988 | Total Months: | 1324 | ||
| Latitude (dec deg): | 45.6 N | Area (km2): | 613830 | ||
| Longitude (dec deg): | 121.18 W | Elevation (m): | 0 | ||
| Annual Discharge: (m3/s): | 5450.8 | (km3/yr): | 171.7 | ||
| Annual Runoff: (l/s/km2): | 8.9 | (mm/yr): | 279.8 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 3162.2 | 3431.6 | 4006.2 | 5749.0 | 9785.8 | 12918.3 | 8830.4 | 4983.9 | 3422.5 | 2911.3 | 2962.2 | 3098.0 |
| km3/mo | 8.5 | 8.3 | 10.7 | 14.9 | 26.2 | 33.5 | 23.7 | 13.3 | 8.9 | 7.8 | 7.7 | 8.3 |
| mm/mo | 13.8 | 13.5 | 17.5 | 24.3 | 42.7 | 54.5 | 38.5 | 21.7 | 14.5 | 12.7 | 12.5 | 13.5 |
| l/s/km2 | 5.2 | 5.6 | 6.5 | 9.4 | 15.9 | 21.0 | 14.4 | 8.1 | 5.6 | 4.7 | 4.8 | 5.0 |
