| Station: | Orekula | Continent: | Europe | ||
| River: | Piarnu | Major Basin : | Baltic Sea | ||
| Country: | Estonia | Discharge into : | Baltic Sea | ||
| Observation Period: | 1965 - 1984 | Total Months: | 240 | ||
| Latitude (dec deg): | 58.45 N | Area (km2): | 5180 | ||
| Longitude (dec deg): | 24.83 E | Elevation (m): | 5 | ||
| Annual Discharge: (m3/s): | 46.2 | (km3/yr): | 1.5 | ||
| Annual Runoff: (l/s/km2): | 8.9 | (mm/yr): | 281.4 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 39.2 | 22.0 | 43.8 | 147.9 | 50.4 | 20.6 | 18.1 | 17.0 | 25.8 | 47.7 | 67.7 | 54.4 |
| km3/mo | 0.1 | 0.1 | 0.1 | 0.4 | 0.1 | 0.1 | 0.0 | 0.0 | 0.1 | 0.1 | 0.2 | 0.1 |
| mm/mo | 20.3 | 10.3 | 22.7 | 74.0 | 26.1 | 10.3 | 9.4 | 8.8 | 12.9 | 24.7 | 33.9 | 28.1 |
| l/s/km2 | 7.6 | 4.2 | 8.5 | 28.6 | 9.7 | 4.0 | 3.5 | 3.3 | 5.0 | 9.2 | 13.1 | 10.5 |
