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Summary

Short Citation
Center for Operational Oceanographic Products and Services, 2025: High Tide Flooding Products from NOAA CO-OPS, https://www.fisheries.noaa.gov/inport/item/70135.
Full Citation Examples

Abstract

High tide flooding is the overflow or excess accumulation of water that covers typically dry coastal land and occurs during high tides. As relative sea levels rise, high tide flooding (HTF) is occurring more frequently, even on sunny days. HTF creates short term impacts like road closures, overflowing storm drains, and temporary business closures. Over the long term, recurrent HTF causes more severe impacts like damage to below-ground infrastructure and degraded wetlands.

Through NOAA's National Ocean Service (NOS), the Center for Operational Oceanographic Products and Services (CO-OPS) and its predecessors have gathered oceanographic data along our nation's coasts for over 200 years to protect life, property, and the environment. Serving both the public and other government agencies, CO-OPS is the authoritative source for accurate, reliable, and timely water-level and current measurements that support safe and efficient maritime commerce, sound coastal management, and recreation. As part of those roles, CO-OPS offers a suite of interactive products that helps communities understand when, where, and how often high tide flooding may occur along the coast to better inform their coastal flood planning and mitigation efforts. The suite includes a summary of historical HTF days as well as Monthly and Annual HTF Outlooks which are produced for specific stations.

Distribution Information

Access Constraints:

None.

Use Constraints:

In the event of severe weather, coastal flooding may still occur outside of dates identified in this tool. This tool should not be used for real-time situations. To monitor water levels in real-time and track storms, visit our Coastal Inundation Dashboard (the URL is included in the Distribution Information Section, but is https://tidesandcurrents.noaa.gov/inundationdb/).

Controlled Theme Keywords

climatologyMeteorologyAtmosphere, COMPOUND EXTREME EVENTS, EXTREME WEATHER, FLOODING, geoscientificInformation, MARINE ENVIRONMENT MONITORING, OCEANS, oceans, SEA SURFACE HEIGHT, STORM SURGE, TIDAL HEIGHT, TIDAL HEIGHT, TIDAL RANGE, TIDES

Child Items

No Child Items for this record.

Contact Information

Point of Contact
Stakeholder Services Branch
tide.predictions@noaa.gov
301-713-2815

Metadata Contact
Stakeholder Services Branch
tide.predictions@noaa.gov
301-713-2815

Extents

Geographic Area 1

144.6° W, -66.9° E, 61.24° N, -14.3° S

Time Frame 1
2016 - Present