| Station: | Birchbank | Continent: | North America | ||
| River: | Columbia | Major Basin : | Pacific Ocean | ||
| Country: | Canada | Discharge into : | Pacific Ocean | ||
| Observation Period: | 1937 - 1984 | Total Months: | 567 | ||
| Latitude (dec deg): | 49.18 N | Area (km2): | 88100 | ||
| Longitude (dec deg): | 117.72 W | Elevation (m): | 410 | ||
| Annual Discharge: (m3/s): | 2029.8 | (km3/yr): | 64.2 | ||
| Annual Runoff: (l/s/km2): | 23.1 | (mm/yr): | 728.5 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 1052.9 | 944.7 | 879.0 | 1114.6 | 2965.7 | 5108.2 | 4278.7 | 2775.3 | 1684.9 | 1303.1 | 1127.0 | 1110.4 |
| km3/mo | 2.8 | 2.3 | 2.4 | 2.9 | 7.9 | 13.2 | 11.5 | 7.4 | 4.4 | 3.5 | 2.9 | 3.0 |
| mm/mo | 32.0 | 25.9 | 26.7 | 32.8 | 90.2 | 150.3 | 130.1 | 84.4 | 49.6 | 39.6 | 33.2 | 33.8 |
| l/s/km2 | 12.0 | 10.7 | 10.0 | 12.7 | 33.7 | 58.0 | 48.6 | 31.5 | 19.1 | 14.8 | 12.8 | 12.6 |
