| View KML View WKT | United States Rivers |
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Merrimack River
| States | Massachusetts (47 mi), New Hampshire (67 mi) |
| Length | 116.8 miles |
| Watershed Length* | 1,116 miles |
| Mouth | Atlantic Ocean |
| GNIS | 619363 |
Tributaries
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| Name | Distance from Mouth (miles) | Length (miles) | Watershed Length (miles) |
|---|---|---|---|
| Beaver Brook | 40 | 28 | 28 |
| Cohas Brook | 68 | 17 | 17 |
| Concord River | 39 | 16 | 107 |
| Contoocook River | 101 | 74 | 170 |
| Little River | 19 | 13 | 13 |
| Nashua River | 55 | 43 | 113 |
| Pemigewasset River | 117 | 66 | 247 |
| Piscataquog River | 71 | 37 | 68 |
| Powwow River | 7 | 26 | 26 |
| Salmon Brook | 53 | 12 | 12 |
| Shawsheen River | 28 | 27 | 27 |
| Soucook River | 86 | 25 | 25 |
| Souhegan River | 62 | 34 | 47 |
| Spicket River | 28 | 14 | 14 |
| Suncook River | 83 | 38 | 51 |
| Winnipesaukee River | 117 | 21 | 34 |
* Note: Watershed is mostly rivers/streams 15+ miles in length.
Data from United States Geological Survey