US Harbors | Tide Charts, Marine Forecast, Coastal Flooding

US Harbors is the #1 Source for Tide Charts and Coastal Information for over 1,400 harbors in 30 coastal states. Our curated data helps you plan smarter, enjoy your time on the water, and stay ahead of rapidly changing tides, storms, and flooding.

Tide Charts

US Harbors illustrates tide forecasts with our simple, intuitive charts. Easily scan the highs and lows online or print a convenient monthly tide chart for the boat or office.

Weather

US Harbors delivers weather predictions with a focus on marine forecasts, buoy data, weather alerts, and onshore forecasts for harbors near you that include wind speed and direction, relative humidity, and more.

High Tide Flooding

Each month, we publish a high-tide flooding report for forecasted harbors across the country. Look for harbors near you to know when extreme high tides could cause flooding. Sign up for our newsletter to be alerted to new high tide flooding reports.

Latest Coastal News Filter

Archival photo of New England swordfishing vessel (left) courtesy of NOAA Fisheries; Background photo and photo offloading fish (right) courtesy of Hawaii Longline Association/Eric Kingma

Highly Migratory Species Management: Managing Shared Resources at Home and Around the World

10/16/2026

By fisheries.noaa.gov, fisheries.noaa.gov. Highly migratory species—like Atlantic yellowfin tuna, Pacific albacore, and Atlantic swordfish—travel thousands of miles across state, national, and international boundaries throughout their lives. These important commercial and recreational fisheries support seafood businesses and coastal communities across the United States. But highly migratory fish don’t recognize state or national borders, so… SEE MORE

A freediver from the Papahānaumokuākea Marine Debris Project works to carefully remove a ghost net from the reef at Kamokuokamohoali‘i (Maro Reef) in Hawaii. (Image credit: Andrew Sullivan-Hawkins/Papahānaumokuākea Marine Debris Project (Under permit # PMNM-2024-003))

Large-scale Marine Debris: 4 Ways to Clean up the Big Stuff

10/12/2026

By fisheries.noaa.gov, fisheries.noaa.gov. Marine debris is a challenging problem. Across the country, NOAA and partners remove everything from lost fishing gear tangled on the seafloor to sunken vessels, abandoned tire reefs, and other trash that have become hazards to navigation and marine ecosystems in the ocean and Great Lakes. Beginning in… SEE MORE

Map showing sea surface height anomalies using Darker reds to show sea levels higher than normal, while darker blues show heights below normal

Kelvin Waves, Explained

10/11/2026

By fisheries.noaa.gov, fisheries.noaa.gov. You may be hearing a lot about Kelvin waves in the news. What are Kelvin waves, and how are they related to El Niño? We asked oceanographer Michael Jacox, from the Southwest Fisheries Science Center and NOAA Physical Sciences Laboratory, to explain the phenomenon. What is a Kelvin wave and… SEE MORE

Quietly Sophisticated: The Hood 42 LM

By US Harbors At first glance, the Hood 42 LM might be confused for a boat that worked the Maine coast fifty years ago, but upon further inspection, the fifteen coats of Epifanes varnish over mahogany and custom-cast bronze hardware reveal that this boat was built for cruising. Beyond the… Learn More

Southern Resident killer whales swim just off Seattle’s shore. NOAA experts anticipate that the West Coast and the Pacific Islands will feel the effects of the 2026–2027 El Niño event most directly. Credit: NOAA Northwest Fisheries Science Center; taken under NOAA permit #781-1824

How Will El Niño Affect Your Local Fisheries?

10/10/2026

By fisheries.noaa.gov, fisheries.noaa.gov. What does El Niño mean for U.S. fisheries and marine life? What can fishermen and coastal communities expect to observe and experience as this event continues and potentially intensifies? And what are scientists at NOAA Fisheries doing to track this natural phenomenon? The El Niño-Southern Oscillation is a powerful… SEE MORE

NOAA Fisheries and Sea Quester Farms partnered up to evaluate if kelp farms provide habitat for marine life in Alaska. Pictured here is one of Sea Quester’s farms in southeast Alaska near Juneau. Credit: Hatch Blue, Alaska Mariculture Cluster

Kelp Farms and Marine Life Co-Exist in Southeast Alaska

10/3/2026

By fisheries.noaa.gov, fisheries.noaa.gov. Marine aquaculture, or mariculture, provides economic opportunities for coastal communities in Alaska through farming shellfish and seaweed. NOAA Fisheries continues to support Alaska’s growing aquaculture industry through policy and permitting—providing access to resources and research. A recent study highlights one of our newest aquaculture research collaborations. Through this… SEE MORE

Endangered insular false killer whale HIPc0280 with her new calf. Credit: Captain Zodiac/Andrea McCormick (NOAA Fisheries Permit #26596)

Seeing Double: Good News for Rare False Killer Whales in Hawaiʻi

9/24/2026

By fisheries.noaa.gov, fisheries.noaa.gov. Research partners spotted two endangered main Hawaiian Islands insular false killer whale calves this year, and they’re starting to grow up! This is a rare and exciting discovery for this small, resident population of only about 140 individuals Range of the endangered main Hawaiian Islands insular false… SEE MORE

A scientist captures thousands of digital images to build a 3-D reef model during the 2026 National Coral Reef Monitoring Program survey at Swains Island. Credit: NOAA Fisheries.

2026 Pacific Coral Surveys Complete

9/23/2026

By fisheries.noaa.gov, fisheries.noaa.gov. NOAA scientists returned from American Samoa and the Pacific Islands Heritage Marine National Monument after conducting coral reef monitoring surveys. The team sailed south from Honolulu to Jarvis Island, Palmyra Atoll, and Kingman Reef, where they completed their suite of surveys. After a 2,000 kilometer transit down… SEE MORE

Sablefish farmed in net pens at NOAA's Northwest Fisheries Science Center. Credit: Megan Ewald for NOAA Fisheries.

Managing Genetic Risk in Offshore Aquaculture

9/19/2026

By fisheries.noaa.gov, fisheries.noaa.gov. Aquaculture can sustainably produce seafood to complement wild-caught fisheries. However, like all food systems, aquaculture requires sound science to ensure farmed species don’t harm wild species. Scientists at NOAA’s Southwest Fisheries Science Center are working to understand the genetic risks in offshore aquaculture. NOAA has identified 21,000… SEE MORE

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Featured Harbors

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A laptop computer displaying the tide page on US Harbors

Who Is US Harbors?

We are a community of boaters, fishermen, surfers, scientists, waterfront homeowners, along with mariners and coastal professionals who work and live by the water. It is the project of a committed team who understand how conditions influence work and play on the coast because we live by the tides just like you. Our home port is Camden, Maine, one of over 1,400 harbors we serve.

Built For People Who Live By The Tides