| name | image | Average flow (m³/s) | basin (m²) | Height (m) | origin location | mouth location | Length (m) | latitude (°) | longitude (°) | canyon | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Souhegan River |  | Merrimack river | 51,000 | 42.8613888889 | -71.4872222222 | Map | |||||
| Beaver Brook (Merrimack River tributary) | Merrimack river | 49,000 | 42.6589000000 | -71.3184000000 | Map | ||||||
| Suncook River |  | Merrimack river | 57,454 | 43.1275000000 | -71.4642000000 | Map | |||||
| Spicket River |  | Merrimack river | 42.7056000000 | -71.1467000000 | Map | ||||||
| North Branch Contoocook River | Merrimack river | 43.1075000000 | -71.9097000000 | Map |