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The river runs southeastward, with New Hampshire to the south and west and Maine to the north and east, and empties into the Gulf of Maine east of Portsmouth, New Hampshire. The last 6 miles (10 km) before the sea are known as Portsmouth Harbor and have a tidal current of around 4 knots (7.4 km/h; 4.6 mph). [1]
Located within the Gulf of Maine watershed, the Great Bay Estuary is a drowned river valley composed of high-energy tidal waters, deep channels and fringing mudflats. The entire estuary extends inland from the mouth of the Piscataqua River between Kittery, Maine, and New Castle, New Hampshire through Little Bay into Great Bay proper at Furber Strait, a distance of 12 miles (19 km).
Portsmouth Harbour is a 1,264.2-hectare (3,124-acre)/12.6 km 2 (4.9 sq mi) biological Site of Special Scientific Interest between Portsmouth and Gosport in Hampshire. [ 1 ] [ 2 ] It is a Ramsar site [ 3 ] and a Special Protection Area .
The dates of spring tides and neap tides, approximately seven days apart, can be determined by the heights of the tides on the classic tide tables: a small range indicates neaps and large indicates springs. This cycle of tides is linked to the phases of the moon, with the highest tides (spring tides) occurring near full moon and new moon.
Originally known as the Portsmouth-Norfolk Tides, the team began play in 1961 as members of the Class A South Atlantic League. In 1963, they joined the Class A Carolina League and became known as the Tidewater Tides, taking their geographic identifier from the Tidewater region. The Tides were replaced by a Triple-A International League team in ...
During the festival, the USCGC Eagle will be docked at the state pier in Portsmouth and open for tours on Saturday and Sunday, July 27 and 28, from 10 a.m. to 5 p.m. Tours are free and open to the ...
Portsmouth is a city in Rockingham County, New Hampshire, United States.At the 2020 census it had a population of 21,956. [2] A historic seaport and popular summer tourist destination on the Piscataqua River bordering the state of Maine, Portsmouth was formerly the home of the Strategic Air Command's Pease Air Force Base, since converted to Portsmouth International Airport at Pease.
U.S. civil and maritime uses of tidal data. A chart datum is the water level surface serving as origin of depths displayed on a nautical chart and for reporting and predicting tide heights.