This page is dedicated to provide some helpful information with TIDES TABLES for tide depending dive-spots and other data that could help to make your dive an enjoyable one. Just keep in mind, all details about time and places to enter specific dive-sites - are based on individual experiences only and should not be treated as a rule. If you find some inaccuracy, please, let us know and we'll fix it gladly.
Thank you and have a safe dive.

How to use NOAA Tides & Currents to calculate dive time

1. Choose a location.
2. Choose the correct date
3. See the slack time.
Example
At Pierce Island, on 2022-11-04 at 08:52 AM is a High tide (According to tide charts by WillyWeather or USharbors)
But the SLACK tide is at 10:37 AM.
That means that you can ENTER water at ~30 - 40 min before indicated SLACK time, in this case at ~ 10:00 - 10:05 AM. In other words, you have about 30 min before and 30 min after indicated SLACK time.
Click ling below to see a detailed explanation by NOAA's Center for Operational Oceanographic Products and Services
NOAA tide and current shart explanation by todivetoday.com
Pick the location to see tide charts and additional information

Portsmouth, NH

Peirce Island. Doggy Park


This site is for experienced divers only. This site is a SLACK TIDE dive. If you plan to dive there for the first time, contact local dive clubs or dive shops that know these sites well.
At HIGH tide – enter about 1:15-1:20 minutes after high tide.
At LOW tide – enter about 1:15-1:20 minutes after low tide.

New Castel, NH

UNH Pier


This site is also for experienced divers only. This site is a SLACK TIDE dive. If you plan to dive there for the first time, contact local dive clubs or dive shops that know these sites well.
At HIGH tide – enter 2 hours before high tide.

Rockport, MA


The sites are for all levels of experience. However, if you plan to dive there for the first time, contact local dive clubs or dive shops that know these sites well.