| Station: | Kappachchi | Continent: | Asia | ||
| River: | Malwatu Oya | Major Basin : | Indian Ocean | ||
| Country: | Sri Lanka | Discharge into : | Indian Ocean | ||
| Observation Period: | 1965 - 1984 | Total Months: | 192 | ||
| Latitude (dec deg): | 8.6 N | Area (km2): | 2121 | ||
| Longitude (dec deg): | 80.26 E | Elevation (m): | 34 | ||
| Annual Discharge: (m3/s): | 10.8 | (km3/yr): | 0.3 | ||
| Annual Runoff: (l/s/km2): | 5.1 | (mm/yr): | 159.8 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 16.0 | 18.3 | 15.9 | 6.1 | 4.5 | 2.0 | 1.6 | 1.4 | 1.2 | 6.5 | 18.0 | 37.7 |
| km3/mo | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 |
| mm/mo | 20.2 | 20.8 | 20.1 | 7.4 | 5.7 | 2.5 | 2.0 | 1.8 | 1.5 | 8.2 | 22.0 | 47.6 |
| l/s/km2 | 7.5 | 8.6 | 7.5 | 2.9 | 2.1 | 1.0 | 0.8 | 0.7 | 0.6 | 3.1 | 8.5 | 17.8 |
