| Station: | Surat Thani | Continent: | Asia | ||
| River: | Tapi | Major Basin : | Gulf of Siam | ||
| Country: | Thailand | Discharge into : | Pacific Ocean | ||
| Observation Period: | 1980 - 1984 | Total Months: | 60 | ||
| Latitude (dec deg): | 8.56 N | Area (km2): | 5200 | ||
| Longitude (dec deg): | 99.25 E | Elevation (m): | 4 | ||
| Annual Discharge: (m3/s): | 124.3 | (km3/yr): | 3.9 | ||
| Annual Runoff: (l/s/km2): | 23.9 | (mm/yr): | 754.6 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 49.0 | 30.1 | 20.1 | 22.0 | 63.8 | 113.7 | 162.4 | 149.6 | 179.4 | 245.7 | 239.4 | 210.6 |
| km3/mo | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.3 | 0.4 | 0.4 | 0.5 | 0.7 | 0.6 | 0.6 |
| mm/mo | 25.2 | 14.0 | 10.3 | 11.0 | 32.9 | 56.7 | 83.6 | 77.1 | 89.4 | 126.6 | 119.3 | 108.5 |
| l/s/km2 | 9.4 | 5.8 | 3.9 | 4.2 | 12.3 | 21.9 | 31.2 | 28.8 | 34.5 | 47.2 | 46.0 | 40.5 |
