| Station: | Isabela, Luson Island | Continent: | Asia | ||
| River: | Cagayan | Major Basin : | Luson Strait | ||
| Country: | Philippines | Discharge into : | Pacific Ocean | ||
| Observation Period: | 1969 - 1974 | Total Months: | 66 | ||
| Latitude (dec deg): | 16.6 N | Area (km2): | 4244 | ||
| Longitude (dec deg): | 121.68 E | Elevation (m): | 92 | ||
| Annual Discharge: (m3/s): | 259.3 | (km3/yr): | 8.6 | ||
| Annual Runoff: (l/s/km2): | 64.1 | (mm/yr): | 2023.0 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 208.6 | 123.9 | 132.8 | 79.8 | 94.1 | 133.3 | 269.4 | 169.3 | 282.6 | 574.6 | 706.6 | 481.4 |
| km3/mo | 0.6 | 0.3 | 0.4 | 0.2 | 0.3 | 0.3 | 0.7 | 0.5 | 0.7 | 1.5 | 1.8 | 1.3 |
| mm/mo | 131.6 | 70.6 | 83.8 | 48.7 | 59.4 | 81.4 | 170.0 | 106.8 | 172.6 | 362.6 | 431.6 | 303.8 |
| l/s/km2 | 49.1 | 29.2 | 31.3 | 18.8 | 22.2 | 31.4 | 63.5 | 39.9 | 66.6 | 135.4 | 166.5 | 113.4 |
