| Station: | Hanwella | Continent: | Asia | ||
| River: | Kelani Ganga | Major Basin : | Indian Ocean | ||
| Country: | Sri Lanka | Discharge into : | |||
| Observation Period: | 1976 - 1979 | Total Months: | 48 | ||
| Latitude (dec deg): | 6.91 N | Area (km2): | 1782 | ||
| Longitude (dec deg): | 80.06 E | Elevation (m): | 0 | ||
| Annual Discharge: (m3/s): | 163.8 | (km3/yr): | 5.2 | ||
| Annual Runoff: (l/s/km2): | 92.0 | (mm/yr): | 2900.0 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 48.2 | 45.4 | 57.8 | 101.2 | 272.8 | 236.0 | 139.2 | 113.0 | 162.0 | 316.2 | 324.0 | 144.5 |
| km3/mo | 0.1 | 0.1 | 0.2 | 0.3 | 0.7 | 0.6 | 0.4 | 0.3 | 0.4 | 0.8 | 0.8 | 0.4 |
| mm/mo | 72.5 | 61.6 | 86.8 | 147.3 | 410.0 | 343.3 | 209.3 | 169.8 | 235.6 | 475.3 | 471.3 | 217.2 |
| l/s/km2 | 27.1 | 25.5 | 32.4 | 56.8 | 153.1 | 132.4 | 78.1 | 63.4 | 90.9 | 177.5 | 181.8 | 81.1 |
