Overview of Great Island Commons

Great Island Commons

New Hampshire
USA East


What a beautiful location. Even if you don’t intend to dive, it is worth the dive to visit this park. The coast is rocky and the entry is easy. What more could you want?!

Directions: Coming into Portsmouth from the South on 1A about .5 mile North of Foyes Corner, turn right on 1B (Wentworth Rd.) In 1.84 miles, turn right into the Great Island Commons.


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Diver Reviews:    Click here to write a Site Review, and share any new information about this site!

06/19/2006 Manta (Avg: 2.63 Review) - This site is called "Newcastle Commons" by natives like me. :) If you absolutely have to get wet, this dive's for you. Uninteresting bottom topo (fairly rocky with lots of rockweed), and very few critters. The main entry area is the sandy beaches to the left of the stone jetty, but I chose the jetty. Gets deeper quickly, vis was dismal even by New England standards. 5-8' MAX. But is a Really nice park, for non divers and families. If the dive conditions deteriorate, kick back and have a BBQ!!

12/23/2003 Shawn (Avg: 2.24 Review) - This site is only good for getting wet! The sand gives way to eel grass, then to some kelp (but not much). Visibility usually sucks (<5 ft), and if you get too far out, the river / tide currents can raise hell (but you would have to swim way out there). No worries about boats (unless you get more than 150 yards out). Some tube worms in silt, some lobster (imagine that), and not much else.


Site Photos

(click photo for a larger version)

 Map     Sat
GPS: NH0701


Entrance at Great Island Commons 

Look carefully for this sign. If you are coming from the South, you may not see it.


 Map     Sat
GPS: NH0702


Parking at Great Island Commons 

Lots of parking everywhere.




Overview at Great Island Commons 

Calm as a lake; pick your spot to enter.

Trail Head



Trail Head at Great Island Commons 

This is just off the parking lot.


 Map     Sat
GPS: NH0705


entry at Great Island Commons 

If you enter at high tide, you can slip off this ledge into deeper water. At low tide, be careful transversing these rocks. Help your buddy!




Overview at Great Island Commons 

The non-divers in your group will have an relaxing time waiting for you.

Last Verification: November, 2003  


Diver Averages for  Great Island Commons  (1=worst, 5=best)

Average Site Condition

Ease of Shore Entry:  4.00
Bottom Conditions:  2.00
Reef Conditions:  1.00
Animal Life:  2.00
Plant Life:  2.00
Facilities:  3.50
Solitude 3.50
Roads:  4.50
*Site Average:  2.44

Average Enjoyment Level

Snorkel:  1.00
Beginner Scuba:  4.00
Intermediate Scuba:  2.00
Advanced Scuba:  1.00
Night diving Scuba:  1.00

Number of reviews for this site: 2


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