Flood

The USGS Long Island Sound Partnership Compound Flood Hazard Web Map Application is an interactive tool developed by the U.S. Geological Survey’s New York Water Science Center that helps users explore the combined impacts of multiple flooding drivers across the New York and Connecticut coastal regions. Drivers of compound flooding included in the assessment were precipitation, coastal (storm surge, tidal), and groundwater emergence, which when combined can lead to more severe and widespread inundation than from any single cause alone.

The map visually displays hazard rankings and spatial patterns of flood drivers so that planners, emergency managers, researchers, and the public can better understand where these flood hazards are most likely to coincide, thus supporting local decision making for flood mitigation, coastal planning, and resilience strategies. The application is based on USGS models and ongoing research into regional flood processes.

The NYC Stormwater Flood Maps show areas in New York City that are at risk of flooding during heavy rain. The tool provides interactive maps that let users explore neighborhood-level flood risk and understand how stormwater might affect streets, homes, and critical infrastructure. It helps residents, planners, and local organizations identify vulnerable areas and make decisions about preparedness, emergency planning, and long-term resilience.

These maps also bring together important environmental and social data, making it easier to compare neighborhoods, see patterns, and understand which communities may face the greatest challenges during extreme weather.

The NYC Flood Hazard Mapper is an interactive tool created by the NYC Department of City Planning to help residents, businesses, and planners understand flood risks across New York City. It provides maps showing current coastal flood hazards, FEMA flood zones, and areas that may be affected by sea level rise in the future. By searching an address or exploring different map layers, users can see how flooding may impact specific neighborhoods today and under future climate conditions.

This resource is designed to support safer decision making as the frequency and severity of flooding increases. While the mapper offers valuable visual data and projections, it is meant for general information only and should not replace official FEMA resources or professional guidance. Users are encouraged to use this tool as a starting point to learn about local flood exposure and to explore how environmental changes may affect communities throughout the city.

Connecticut Insurance Department CID, in Collaboration with First Street Foundation, provides climate related risk mapping tool for Connecticut residents.  This tool allows users to search Connecticut property addresses to view maps and reports that provide detailed property-specific climate risk assessments, particularly for flood, wildfire, extreme heat, and hurricane wind hazards. This free risk mapping tool allows homeowners, home buyers, small-business owners, and community leaders to identify the risks using state-of-the-art climate risk mapping technology.

Congressionally Directed Spending requests, also known as Community Project Funding or Earmarks, are funding requests for high-impact, Connecticut-based projects that can be completed with assistance from the federal government. The project must meet the eligibility requirements for at least one of the accounts listed.

On December 5, 2024, the Sustainable and Resilient Communities (SRC) team of the Long Island Sound Study hosted a field trip featuring the Town of Hamden’s Bioretention Project – the largest municipally owned rain garden in the state! Participants began with a guided tour of the rain garden and bioretention areas at Town Center Park, where they heard from project planners and managers about its history, partnerships, challenges, and maintenance. Following this, participants gathered at the Hamden Government Center for a working lunch and presentations on topics including UConn’s Stormwater Corps, native plants, project engineering, and using nature-based solutions to advance climate resilience goals. The day concluded with a lively group discussion. Special thanks to our partners with the Town of Hamden, Save the Sound, the Hamden Land Trust, and UConn Extension.

Photo credit: Judy Benson

This site provides federally supported data visualizations coupled with explanations and science education to help communities prepare for challenges that will affect our coastal environments. By showing how sea levels are changing regionally, the site provides a foundation to inform decision-making related to coastal planning, resource management, and emergency operations.

This website is a collaborative effort from The Interagency Task Force on Sea Level Change (DOD, EPA, FEMA, NASA, NOAA, USACE, USAID, and USGS).

WEST COG developed this riparian zoning publication that is primarily focused on water quality, but also is highly relevant to climate mitigation.

This resource outlines six different federal mitigation funding programs. It provides an overview of available options and links to learn more information and apply.

Congressionally Directed Spending requests, also known as Community Project Funding or Earmarks, are funding requests for high-impact, Connecticut-based projects that can be completed with assistance from the federal government. The project must meet the eligibility requirements for at least one of the accounts listed.

This study by Seth et al. provides up-to-date information on observed trends and projections of temperature and precipitation in Connecticut.

This tool produces location-specific scenarios for sea level and flooding, as well as information about present-day and past conditions. Local governments and other practitioners can use the information to make informed decisions about strategic adaptation investments. The site incorporates data, maps, and visualizations and produces automated, location-specific reports.