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43°03′54″N70°54′18″W / 43.0651°N 70.9049°W /43.0651; -70.9049
| Lamprey River | |
|---|---|
Lamprey River inNewmarket, New Hampshire | |
| Location | |
| Country | United States |
| State | New Hampshire |
| District | Rockingham County |
| Municipalities | Northwood,Deerfield,Raymond,Epping,Lee,Durham,Newmarket |
| Physical characteristics | |
| Source | Meadow Lake |
| • location | Northwood |
| • coordinates | 43°12′3″N71°12′19″W / 43.20083°N 71.20528°W /43.20083; -71.20528 |
| • elevation | 594 ft (181 m) |
| Mouth | Great Bay |
• location | Newmarket |
• coordinates | 43°3′54″N70°54′20″W / 43.06500°N 70.90556°W /43.06500; -70.90556 |
• elevation | 0 ft (0 m) |
| Length | 50.2 mi (80.8 km)[1] |
| Basin features | |
| Tributaries | |
| • left | Pawtuckaway River,North River,Little River |
| • right | North Branch River,Piscassic River |
| Type | Recreational |
| Designated | November 12, 1996 |

TheLamprey River is a 50.2-mile-long (80.8 km)[1] river in southeasternNew Hampshire, theUnited States. It rises in Meadow Lake inNorthwood, and flows south, then generally east throughRaymond,Epping,Lee,Durham and finallyNewmarket. Here, it meetsGreat Bay, atidal inlet of theAtlantic Ocean, to which it is connected by a tidalestuary, thePiscataqua River. The river from the Bunker Pond Dam in Epping to the confluence with thePiscassic River is part of the designatedNational Wild and Scenic River System.
Segments of the river are rich in history. Saw- and gristmills which operated bywater power were common along the river. TheWiswall Falls Mills Site inDurham is on theNational Register of Historic Places. Originally asawmill, the site was used subsequently to make knives, nuts and bolts,pitchforks,carriages,matches andwallpaper. Sites such as Wadleigh Falls show the remnants of old mills and the rich river culture that used to be. Located inLee, the falls is the remains of a dam created to power a mill which fed a 150-acre (61 ha) mill pond at one point.
The shoreline of the Lamprey River, its floodplain and its wetlands provide a wide range of valuable wildlife habitats. Itsanadromous fishery is one of the strongest in the Great Bay watershed. Such fish species that use the Lamprey River includeshad,river herring,smelt and evenAtlantic salmon. These fish are hatched in the river, then spend most of their lives out at sea, returning to the river to spawn. With the construction in 2012 of a fish ladder at Wiswall Dam in Durham,[2] the fish species are able to move up the river as far as Wadleigh Falls Dam in Lee.
The river is also rich in species of freshwatermussels. The river is managed by theNew Hampshire Fish and Game Department for several different types of game fish, includingbrook trout which is native to the river.Rainbow trout andbrown trout are also stocked in many parts of the river but are not native to the area.
Lampreys are also present in the river. However, the Lamprey River derives its name from an early settler who lived in the area, John Lamprey, rather than the fish itself.[3]
Along the banks are hardwood forests and numerous farms. The area is under pressure from suburban development as one of the fastest-growing areas inNew England. There is a strong local culture surrounding the Lamprey River with several local events held on the river, including numerous town-run fishing derbies and the Lamprey River Canoe Race held annually inEpping.
During the course of its journey from the Saddleback Mountains in Northwood down to Newmarket, the Lamprey changes from a small torrential stream to a smalltidal river. The river between these points has slow meanders andrapids, and small waterfalls such as Packers Falls in Durham.