Located on the Piscataqua River, Portsmouth, New Hampshire, is a historic city known for its rich maritime heritage and stunning coastal scenery. For residents and visitors alike, understanding the local tide patterns is essential for a variety of activities, including boating, fishing, and simply enjoying the city's beautiful waterfront. The Portsmouth New Hampshire tide chart is a valuable tool for anyone looking to make the most of their time in this charming coastal city.
Understanding the Tides in Portsmouth, NH

The tides in Portsmouth are semi-diurnal, meaning that there are two high tides and two low tides each day. The tidal range, or the difference between the high and low tide marks, is approximately 8-10 feet. This significant variation in water level has a profound impact on the city’s coastline, revealing hidden coves and beaches at low tide and flooding them at high tide. For those looking to engage in water-based activities, it’s crucial to consult the Portsmouth New Hampshire tide chart to plan their day accordingly.
Reading the Tide Chart
Interpreting the Portsmouth New Hampshire tide chart requires a basic understanding of tidal terminology. The chart typically lists the date, time, and height of the high and low tides, as well as the lunar phase. The height of the tide is measured in feet above or below the mean lower low water (MLLW) mark, which is the average height of the lowest tide of each day over a specific 19-year period. By consulting the chart, users can determine the best times for activities such as kayaking, paddleboarding, or simply taking a stroll along the beach.
Date | High Tide | Low Tide |
---|---|---|
March 12, 2023 | 8:45 AM (8.2 ft) | 2:45 PM (-0.5 ft) |
March 12, 2023 | 9:15 PM (8.5 ft) | 3:15 AM (-0.2 ft) |

Practical Applications of the Tide Chart

Beyond recreational activities, the Portsmouth New Hampshire tide chart has numerous practical applications. For example, fishermen can use the chart to determine the best times to fish, as certain species are more active during specific tidal phases. Additionally, boaters can use the chart to plan their routes and avoid shallow waters, while coastal engineers can use the data to design and build structures that can withstand the stresses of the tidal cycle.
Tidal Influences on Coastal Erosion
The tides also play a significant role in shaping the coastline of Portsmouth, with erosion being a major concern. As the tides rise and fall, they wear away the shoreline, causing erosion and sediment transport. By studying the tidal patterns and consulting the Portsmouth New Hampshire tide chart, coastal managers can better understand the dynamics of erosion and develop strategies to mitigate its effects.
Key Points
- The Portsmouth New Hampshire tide chart is a valuable tool for planning water-based activities and understanding coastal dynamics.
- The tides in Portsmouth are semi-diurnal, with two high tides and two low tides each day.
- The tidal range in Portsmouth is approximately 8-10 feet, with significant variations in water level throughout the day.
- Consulting the tide chart regularly is essential for staying up-to-date with changes in tidal patterns and planning activities accordingly.
- The Portsmouth New Hampshire tide chart has numerous practical applications, including fishing, boating, and coastal engineering.
In conclusion, the Portsmouth New Hampshire tide chart is an indispensable resource for anyone looking to explore and appreciate the city's stunning coastline. By understanding the tidal patterns and consulting the chart regularly, residents and visitors can make the most of their time in Portsmouth and enjoy the city's many water-based activities with confidence.
How often are the tides in Portsmouth, NH?
+The tides in Portsmouth, NH, are semi-diurnal, meaning that there are two high tides and two low tides each day.
What is the tidal range in Portsmouth, NH?
+The tidal range in Portsmouth, NH, is approximately 8-10 feet, with significant variations in water level throughout the day.
How can I access the Portsmouth New Hampshire tide chart?
+The Portsmouth New Hampshire tide chart can be accessed online through various websites, including the National Oceanic and Atmospheric Administration (NOAA) and the United States Coast Guard.
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