Portsmouth (NH) Harbor – 43.1°N, 70.8°W (beta)

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River traffic. Piscataqua River currents restrict travel by tankers and other large vessels to slack tide, roughly four hours a day. See chart below for slack tide at the entrance to Portsmouth Harbor. The entrance is nearly three miles from the location of the PortsmouthNH.com's HarborCam. Slack tide at the HarborCam is roughly a half hour later. A schedule of shipping in the Piscataqua is not available.

Piscataqua River Currents
Sat 12:04am    EST -1.38 knots Max Ebb
Sat 04:01am    EST 0.00 knots Slack, Flood Begins
Sat 04:21am    EST Moonset
Sat 05:54am    EST 1.00 knots Max Flood
Sat 06:55am    EST Sunrise
Sat 09:53am    EST -0.00 knots Slack, Ebb Begins
Sat 12:40pm    EST -1.70 knots Max Ebb
Sat 01:50pm    EST Moonrise
Sat 04:49pm    EST 0.00 knots Slack, Flood Begins
Sat 04:58pm    EST Sunset
Sat 06:28pm    EST 0.79 knots Max Flood
Sat 10:23pm    EST -0.00 knots Slack, Ebb Begins
Sun 12:57am    EST -1.49 knots Max Ebb
Sun 04:49am    EST 0.00 knots Slack, Flood Begins
Sun 05:04am    EST Moonset
Sun 06:46am    EST 1.11 knots Max Flood
Sun 06:54am    EST Sunrise
Sun 10:40am    EST -0.00 knots Slack, Ebb Begins
Sun 01:29pm    EST -1.85 knots Max Ebb
Sun 02:53pm    EST Moonrise
Sun 04:59pm    EST Sunset
Sun 05:33pm    EST 0.00 knots Slack, Flood Begins
Sun 07:19pm    EST 0.96 knots Max Flood
Sun 11:11pm    EST -0.00 knots Slack, Ebb Begins

Current Conditions

27.9 oF
partly cloudy
Forecast


An EarthCam Top 10 Webcam

New Hampshire-Maine border. The N.H.-Maine border lies in the middle of the Piscataqua River. Its exact location was the subject of a long-running dispute settled by the U.S. Supreme Court.

Piscataqua River. This Piscataqua River is a 13-mile long tidal estuary formed by merging of the Salmon and Cocheco rivers. The river, which separates Maine and New Hampshire, also drains Great Bay, a National Estuarine Research Reserve site. The last 8.8 miles of the Piscataqua River constitute Portsmouth Harbor, which stretches across New Castle, Portsmouth, and Newington, and the Maine communities of Kittery and Eliot.

Currents. The swift currents of the Piscataqua River make Portsmouth Harbor one of the fastest flowing commercial port waterways in the northeastern United States. The ice-free deep-water channel has been used for shipping since the 1600s.

Points of Interest Portsmouth Harbor

Points of Interest
1. Moran Towing tugboats
2. Public benches
3. Ferry Landing restaurant
4. Tug Alley Too tugboat
5. Memorial Bridge
6. Portsmouth Naval Shipyard
7. Badger's Island, Kittery, Maine

What kind of name is Piscataqua (Piss-cat-a-qua)? Easy for you to say, but not so easy to spell. See an extended examination of the origin of the word at SeacoastNH.com and 20 ways to spell Piscataqua.

More information. For more about the Piscataqua River, see the Army Corps of Engineers Water Resources web page.

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