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

28.2 oF   overcast    forecast      image scheduled to reload every 8 seconds;actual time varies      tides     send email


Ceres Street, Portsmouth, N.H., looking northeast over the Piscataqua River toward Kittery, Maine.
Latitude: 43.07905408740087
Longitude: -70.75766086578369

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 Harbor Cam is roughly a half hour later. A schedule of shipping in the Piscataqua is not available.

Currents. The swift currents of the Piscataqua River make it among he fastest flowing tidal waterways in the Continental United States (NOAA list of 50 fastest in North America; look for "Nobles Island, north of"). The ice-free deep-water channel has been used for shipping since the 1600s.

Piscataqua River Currents
Sun 12:43am    EST -1.43 knots Max Ebb
Sun 03:39am    EST 0.00 knots Slack, Flood Begins
Sun 03:45am    EST Moonset
Sun 05:29am    EST 0.82 knots Max Flood
Sun 06:19am    EST Sunrise
Sun 06:24am    EST 0.79 knots Min Flood
Sun 07:47am    EST 0.89 knots Max Flood
Sun 09:33am    EST -0.00 knots Slack, Ebb Begins
Sun 01:25pm    EST -1.71 knots Max Ebb
Sun 02:00pm    EST Moonrise
Sun 04:22pm    EST 0.00 knots Slack, Flood Begins
Sun 05:31pm    EST Sunset
Sun 08:22pm    EST 0.90 knots Max Flood
Sun 10:05pm    EST -0.00 knots Slack, Ebb Begins
Mon 01:47am    EST -1.47 knots Max Ebb
Mon 04:22am    EST Moonset
Mon 04:32am    EST 0.00 knots Slack, Flood Begins
Mon 06:17am    EST Sunrise
Mon 06:27am    EST 0.83 knots Max Flood
Mon 07:08am    EST 0.81 knots Min Flood
Mon 08:37am    EST 0.92 knots Max Flood
Mon 10:24am    EST -0.00 knots Slack, Ebb Begins
Mon 02:13pm    EST -1.75 knots Max Ebb
Mon 02:56pm    EST Moonrise
Mon 05:11pm    EST 0.00 knots Slack, Flood Begins
Mon 05:32pm    EST Sunset
Mon 09:09pm    EST 0.95 knots Max Flood
Mon 10:55pm    EST -0.00 knots Slack, Ebb Begins

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About the 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.

 

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.

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-qwa)? 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.