| Station: | Castro daire | Continent: | Europe | ||
| River: | Paiva | Major Basin : | Douro | ||
| Country: | Portugal | Discharge into : | |||
| Observation Period: | 1976 - 1984 | Total Months: | 108 | ||
| Latitude (dec deg): | 40.88 N | Area (km2): | 286 | ||
| Longitude (dec deg): | 7.92 W | Elevation (m): | 450 | ||
| Annual Discharge: (m3/s): | 7.1 | (km3/yr): | 0.2 | ||
| Annual Runoff: (l/s/km2): | 24.8 | (mm/yr): | 783.6 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 11.7 | 21.2 | 10.1 | 8.6 | 6.5 | 2.8 | 0.9 | 0.3 | 0.2 | 2.1 | 5.5 | 16.3 |
| km3/mo | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| mm/mo | 110.0 | 179.3 | 94.6 | 77.8 | 60.9 | 25.3 | 8.4 | 3.2 | 2.0 | 19.8 | 49.5 | 152.9 |
| l/s/km2 | 41.1 | 74.1 | 35.3 | 30.0 | 22.7 | 9.8 | 3.1 | 1.2 | 0.8 | 7.4 | 19.1 | 57.1 |
