| Station: | Lowell, Massachussets | Continent: | North America | ||
| River: | Merrimack | Major Basin : | Atlantic Ocean | ||
| Country: | United States | Discharge into : | Atlantic Ocean | ||
| Observation Period: | 1965 - 1984 | Total Months: | 237 | ||
| Latitude (dec deg): | 42.65 N | Area (km2): | 12005 | ||
| Longitude (dec deg): | 71.3 W | Elevation (m): | 2 | ||
| Annual Discharge: (m3/s): | 231.7 | (km3/yr): | 7.3 | ||
| Annual Runoff: (l/s/km2): | 19.3 | (mm/yr): | 607.1 |
| Mean for Observation Period | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
| m3/sec | 204.5 | 251.9 | 400.9 | 564.2 | 350.8 | 203.8 | 108.8 | 79.5 | 66.3 | 129.0 | 180.2 | 238.3 |
| km3/mo | 0.5 | 0.6 | 1.1 | 1.5 | 0.9 | 0.5 | 0.3 | 0.2 | 0.2 | 0.3 | 0.5 | 0.6 |
| mm/mo | 45.6 | 50.8 | 89.4 | 121.8 | 78.3 | 44.0 | 24.3 | 17.7 | 14.3 | 28.8 | 38.9 | 53.2 |
| l/s/km2 | 17.0 | 21.0 | 33.4 | 47.0 | 29.2 | 17.0 | 9.1 | 6.6 | 5.5 | 10.7 | 15.0 | 19.8 |
