The Blackwater River is a 3.1-mile-long (5.0 km) tidal inlet in northeastern Massachusetts and southeastern New Hampshire in the United States.[1]
Blackwater River | |
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Location | |
Country | United States |
States | Massachusetts, New Hampshire |
Counties | Essex County, MA; Rockingham County, NH |
Towns | Salisbury, MA; Seabrook, NH |
Physical characteristics | |
Source | |
• location | Salisbury, MA |
• coordinates | 42°52′0″N 70°49′22″W |
• elevation | 0 ft (0 m) |
Mouth | Hampton Harbor |
• location | Seabrook, NH |
• coordinates | 42°53′20″N 70°49′38″W |
• elevation | 0 ft (0 m) |
Length | 3.1 mi (5.0 km) |
The river forms in a salt marsh in the northeastern corner of Salisbury, Massachusetts, by the convergence of the Little River and Dead Creek. Heading north, the river quickly enters Seabrook, New Hampshire and continues to flow through salt marsh until it reaches Hampton Harbor, northwest of Seabrook Beach, where it joins the Hampton River.
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Long Island Sound |
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Coastal waterbodies of Massachusetts | |
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