| Station: | Massena, New York | Continent: | North America | ||
| River: | St. Lawrence | Major Basin : | Gulf of St. Lawrence | ||
| Country: | United States | Discharge into : | Atlantic Ocean | ||
| Observation Period: | 1860 - 1984 | Total Months: | 1491 | ||
| Latitude (dec deg): | 44.7 N | Area (km2): | 764600 | ||
| Longitude (dec deg): | 75.5 W | Elevation (m): | |||
| Annual Discharge: (m3/s): | 6894.5 | (km3/yr): | 217.4 | ||
| Annual Runoff: (l/s/km2): | 9.0 | (mm/yr): | 284.3 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 6292.7 | 6276.4 | 6579.1 | 7092.3 | 7334.3 | 7443.6 | 7399.0 | 7221.0 | 7005.6 | 6791.2 | 6668.6 | 6585.0 |
| km3/mo | 16.9 | 15.2 | 17.6 | 18.4 | 19.6 | 19.3 | 19.8 | 19.3 | 18.2 | 18.2 | 17.3 | 17.6 |
| mm/mo | 22.0 | 19.9 | 23.0 | 24.0 | 25.7 | 25.2 | 25.9 | 25.3 | 23.7 | 23.8 | 22.6 | 23.1 |
| l/s/km2 | 8.2 | 8.2 | 8.6 | 9.3 | 9.6 | 9.7 | 9.7 | 9.4 | 9.2 | 8.9 | 8.7 | 8.6 |
