Mad River (Cocheco River tributary)

Mad River
Ledges near River Road in Farmington, NH
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Location
Country	United States
State	New Hampshire
County	Strafford
Town	Farmington
Physical characteristics
Source	Nubble Pond
• location	Farmington
• coordinates	43°21′4″N 71°6′1″W / 43.35111°N 71.10028°W / 43.35111; -71.10028
• elevation	715 ft (218 m)
Mouth	Cochecho River
• location	Farmington village
• coordinates	43°23′11″N 71°4′2″W / 43.38639°N 71.06722°W / 43.38639; -71.06722
• elevation	270 ft (82 m)
Length	5.2 mi (8.4 km)

The Mad River is a 5.2-mile-long (8.4 km)^[1] river in eastern New Hampshire in the United States. It is a tributary of the Cochecho River, part of the Piscataqua River watershed leading to the Atlantic Ocean.

The river is located entirely in the town of Farmington. It rises in Nubble Pond, between Nubble Mountain and Hussey Mountain, and flows northwest, then northeast, reaching the Cochecho near the town center of Farmington. The river drops more than 500 feet (150 m) over its 5-mile (8 km) route, in places falling over scenic ledges.