long island sound community

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Resource

Long Island Watershed Action Agenda

The Long Island Watershed Action Agenda is a clear-cut blueprint for water quality improvements, aquatic habitat conservation, groundwater protection, and the public engagement necessary to ensure success for the surface, coastal, and ground waters of Nassau and Suffolk counties. The Long Island Watershed Action Agenda is an evolution of the success of the Long Island Nitrogen Action Plan (LINAP) and will expand the scope of its work beyond nitrogen reduction.

New York State
Habitat
Nature-based Solutions
Environmental Health Hazards
Aquatic Resources
Stormwater Management
Water Quality
Infrastructure
Incentive Programs
Planning
Funding/Grants
Policies & Regulations
Community Engagement
Wetlands
Waste Management
Green Infrastructure

Incentive Program

Suffolk County Septic Improvement Program

Resources and information on Suffolk County’s Reclaim Our Water Initiatives and Septic Improvement Program. Through the Septic Improvement Program homeowners can access grants from New York State and Suffolk County to replace their cesspool or septic system with a nitrogen removal septic system and leaching structure.

New York State
Water Quality
Infrastructure
Incentive Programs

Website

Sustainable CT

Sustainable CT provides a wide-ranging menu of resilience best practices, opportunities for grant funding, and a voluntary certification program that recognizes thriving and resilient CT communities. Municipalities choose Sustainable CT actions, implement them, and earn points toward certification.

Connecticut State
Infrastructure
Incentive Programs
Funding/Grants
Policies & Regulations

Plan

Superstorm Sandy Review Task Force Report to the Legislature: Looking to the Past to Prepare for the Future

The Superstorm Sandy Review Task Force conducted an in-depth review of the preparation for and response to Superstorm Sandy in Suffolk County by government agencies, first responders, nonprofits and private sector entities to determine which measures were effective and what actions must be taken in the future to increase resiliency and improve response to extreme weather events.

New York State
Flooding
Sea Level Rise
Infrastructure
Extreme Weather & Storms
Policies & Regulations

Plan

Suffolk County Subwatersheds Wastewater Plan: A Roadmap to Reclaim Our Water

The Suffolk County Subwatersheds Wastewater Plan serves as a county-wide roadmap for how to address nitrogen pollution through wastewater upgrades and other nitrogen pollution mitigation strategies. It was developed in collaboration with numerous project partners, stakeholders, and technical experts, and is the product of rigorous, science-based evaluations.

New York State
Water Quality
Infrastructure
Incentive Programs
Policies & Regulations

Incentive Program

NYSERDA Clean Energy Communities

The New York State Energy Research and Development Authority (NYSERDA) Clean Energy Communities (CEC) program helps local governments to implement clean energy actions, save energy costs, create jobs, and improve the environment. In addition to providing tools, resources, funding opportunities and technical assistance, the program recognizes and rewards leadership for the completion of clean energy projects and guides a path toward the Clean Energy Communities designation. Find your local CEC Coordinator to start!

New York State
Infrastructure
Incentive Programs
Funding/Grants
Policies & Regulations

Incentive Program

NYS Climate Smart Communities

The Climate Smart Communities (CSC) is a New York State program that helps local governments take action to reduce greenhouse gas emissions and adapt to a changing climate. The program offers grants, rebates for electric vehicles, and free technical assistance. Registered communities have made a commitment to act by passing the CSC pledge. Certified communities are the foremost leaders in the state; they have gone beyond the CSC pledge by completing and documenting a suite of actions that mitigate and adapt to climate change at the local level. Find your local CSC Coordinator to start!

New York State
Infrastructure
Incentive Programs
Funding/Grants
Policies & Regulations

Resource

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NYSDEC Living Shoreline Map

Check out our interactive map to learn about living shoreline projects located in the marine district of New York. 

More information about living shorelines and their benefits can be found on the NYSDEC Living Shorelines webpage.

New York State
Erosion
Flooding
Habitat
Land Use
Nature-based Solutions
Sea Level Rise
Aquatic Resources
Economic Impacts
Infrastructure
Recreation & Access
Extreme Weather & Storms
Policies & Regulations
Wetlands
Green Infrastructure

Mapper

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NYC Stormwater Flood Maps

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.

New York State
Flooding
Environmental Health Hazards
Sea Level Rise
Stormwater Management
Infrastructure
Planning
Extreme Weather & Storms

Resource

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Adapting to Flood and Erosion Risk

A start guide for addressing flooding and erosion in coastal communities. Learn about the steps communities can take to adapt along with different adaptation strategies. 

New York State
Erosion
Flooding
Nature-based Solutions
Sea Level Rise
Infrastructure
Planning
Green Infrastructure

Website

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The Atlas of Inspiration

The Atlas of Inspiration is a national database that highlights real projects helping communities adapt to extreme weather, flooding, heat, and sea-level rise. It showcases innovative infrastructure, planning strategies, and funding approaches that can be adapted or scaled by other communities. The Atlas is designed to celebrate successful ideas and give decision-makers examples they can use when seeking state or federal funding.

The Atlas is fully searchable, allowing users to browse projects by type, climate hazard, or location. It builds on Rebuild by Design’s earlier work including the Atlas of Disaster and the Atlas of Accountability by showing not only the risks communities face, but the solutions that are already making a difference.

Rebuild by Design also invites communities to share their own climate resilience projects for inclusion in the Atlas. Submissions help expand the collection and highlight new approaches being used across the country.

New York State
Connecticut State
Nature-based Solutions
Infrastructure
Planning
Extreme Weather & Storms
Green Infrastructure

Report

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Severe Weather Mitigation & Resiliency Advisory Council – Final Report 2025

Connecticut’s Severe Weather Mitigation and Resiliency Advisory Council was created to help the state better prepare for the growing risks of hurricanes, flooding, and other severe weather events. According to the Council and the CT Insurance Department, many Connecticut homes especially older buildings or houses in coastal and urban areas are highly vulnerable to wind and flood damage. The Council’s final report explains that severe weather is becoming more expensive for families, and many residents lack the insurance or financial resources to recover after storms. To address this, the Council recommends strengthening partnerships with programs like Energize CT, Habitat for Humanity, and the CT Green Bank, and promoting upgrades such as IBHS Fortified™ roofs, which can reduce damage from high winds. They also emphasize the need for public education about flood risk, insurance awareness, and preparedness, along with long-term actions like statewide grant programs, tax credits, and expanded training for contractors and evaluators. Together, these efforts aim to help Connecticut residents protect their homes, reduce storm damage, and build a safer, more resilient future.

You can view the complete Final Report (2025) in PDF format

Connecticut State
Flooding
Environmental Health Hazards
Infrastructure
Incentive Programs
Planning
Extreme Weather & Storms
Funding/Grants
Policies & Regulations
Community Engagement

Guidance Tool

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Funding and Financing Coastal Resilience (Recorded Webinars)

The “Funding and Financing Coastal Resilience” webinar series from the NOAA Office for Coastal Management offers a comprehensive foundation for understanding how coastal resilience projects are funded and financed. These 30- to 45-minute recorded sessions break down complex approaches into accessible lessons, featuring experts who share real world examples, emerging strategies like environmental impact bonds and tax-increment financing, and ways to overcome common obstacles to funding such work. As a resource, the series is ideal if you’re looking to generate ideas, explore different financing pathways, and build your capacity to access and manage funding for nature-based or infrastructure-driven resilience efforts.

New York State
Connecticut State
Nature-based Solutions
Economic Impacts
Infrastructure
Planning
Funding/Grants
Community Engagement

Report

Level of Effort:

Building a Resilient Trail

This report provides on guidance on ways to adapt the Shoreline Greenway Trail to the increasing frequencies of heavy rain, wildfires, hurricanes, flood events, and storm surges. The report defines what we mean by resilience for a trail in coastal Connecticut, identifies climate impacts facing the trail now, and in the years to come, shares design suggestions that could build resiliency on existing and new sections, and explores how the trail itself can be essential to wider community resiliency.

Connecticut State
Erosion
Nature-based Solutions
Infrastructure
Recreation & Access
Green Infrastructure

Website

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GSI Impact Hub

The GSI Impact Hub is an interactive platform that provides tools, research, and data to help communities plan and evaluate green stormwater infrastructure (GSI) projects. GSI uses natural systems like plants, soil, and stone to manage stormwater on-site reducing flooding, improving water quality, and creating healthier, more resilient neighborhoods. The Hub includes a benefits calculator, educational resources, and guidance to support city planners, advocates, and policymakers in designing projects that maximize environmental, social, and economic benefits.

Explore the GSI Impact Calculator, Detailed Resource Library, and Project Background to better understand how GSI can reduce flooding, improve water quality, and build climate-resilient neighborhoods.

New York State
Connecticut State
Flooding
Nature-based Solutions
Economic Impacts
Stormwater Management
Water Quality
Infrastructure
Policies & Regulations
Community Engagement
Green Infrastructure

Resource

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Culverts and Climate Resilience Fact Sheet

This fact sheet produced by the Connecticut Institute for Resilience and Climate Adaptation (CIRCA) reviews how culverts are defined in Connecticut, explains their connection to climate resilience, provides examples of how Connecticut towns are addressing needs for upgraded culverts, and highlights related resources.

Connecticut State
Flooding
Habitat
Nature-based Solutions
Stormwater Management
Infrastructure
Extreme Weather & Storms
Green Infrastructure

Resource

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Green Stormwater Infrastructure Workbook

This workbook made by Groundwork Bridgeport provides a thorough but accessible introduction to green stormwater infrastructure. The workbook explains the issues that green infrastructure can help solve, introduces several green infrastructure methods, and then provides definitions, explains why each is uses, and details how to build them.

New York State
Connecticut State
Nature-based Solutions
Stormwater Management
Water Quality
Infrastructure
Green Infrastructure

Guidance Tool

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Federal Flood Mitigation Funding Program Cheat Sheet

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

New York State
Connecticut State
Flooding
Stormwater Management
Infrastructure
Planning
Funding/Grants

Plan

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Suffolk County Hazard Mitigation Plan

Suffolk County and the local governments within Suffolk County developed a FEMA approved Hazard Mitigation Plan, which documents risks from natural hazards and strategies to mitigate hazards.

New York State
Erosion
Flooding
Environmental Health Hazards
Sea Level Rise
Economic Impacts
Stormwater Management
Water Quality
Infrastructure
Extreme Weather & Storms
Policies & Regulations

Story Map

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Westchester County Hazard Mitigation Plan Story Map

This Story Map was developed to provide an overview of the Westchester County Multi-Jurisdictional Hazard Mitigation Plan (HMP) to facilitate county-wide access to the plan. The Westchester County HMP was developed to provide a roadmap to resilience by identifying hazards affecting the county and its communities.

Erosion
Flooding
Environmental Health Hazards
Sea Level Rise
Economic Impacts
Stormwater Management
Water Quality
Infrastructure
Extreme Weather & Storms
Policies & Regulations

Guidance Tool

Level of Effort:

CT DEEP Coastal Property Owner’s Guide

Guidance for coastal property owners, buyers, contractors, or real estate professionals to understand if a shoreline structure, construction, or repair requires a permit.

Connecticut State
Infrastructure
Policies & Regulations

Website

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NOAA State Climate Summaries

The 2022 State Climate Summaries provide new information on assessment topics directly related to NOAA’s mission, specifically historical climate variations and trends, future climate model projections of climate conditions during the 21st century, and past and future conditions of sea level and coastal flooding. Select your state to find state-level information for observed changes in climate, including both long-term trends and extreme weather events.

New York State
Connecticut State
Flooding
Sea Level Rise
Stormwater Management
Infrastructure
Extreme Weather & Storms

Story Map

Level of Effort:

NY Sea Grant Long Island Dynamic Shorelines

This story map examines the coastal processes and hazards of Long Island and provides options for sustainable and resilient shoreline management. Information is useful for coastal managers, planners and coastal property owners.

New York State
Erosion
Flooding
Habitat
Land Use
Nature-based Solutions
Environmental Health Hazards
Sea Level Rise
Infrastructure
Extreme Weather & Storms
Funding/Grants
Policies & Regulations
Wetlands

Mapper

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Long Island Sound Crossing Prioritization Tool

The Long Island Sound Crossing Prioritization Tool can be used to prioritize road-stream crossings (culverts and bridges) for ecological, infrastructure, and community resilience benefits in Westchester, Nassau and Suffolk County, NY. The tool helps communities plan improvements that restore habitat for diadromous fishes, strengthen infrastructure, and keep communities connected.

Developed by Save the Sound in partnership with Seatuck Environmental Association and The Nature Conservancy, the Long Island Sound Crossing Prioritization Tool was built by CivicMapper and is hosted on ArcGIS Online. It is intended to be a resource for municipalities, especially parts of municipal government that make infrastructure or environmental decisions for their communities, by making it easier to apply for grant funding. The tool is a useful resource for agency partners and fellow environmental organizations working to accelerate river restoration and protect communities from a changing climate.

New York State
Flooding
Habitat
Nature-based Solutions
Sea Level Rise
Aquatic Resources
Infrastructure
Planning
Extreme Weather & Storms
Wetlands

Mapper

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USGS Compound Flood Hazard Web Map

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.

New York State
Connecticut State
Flooding
Sea Level Rise
Stormwater Management
Infrastructure
Planning
Extreme Weather & Storms

Mapper

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Coastal Barrier Resources System Mapper

Signed into law on November 25, 2024, the bipartisan BEACH Act (BEACH Act; Pub. L. 118-117) reauthorizes the Coastal Barrier Resources Act (CBRA) and updates maps for 454 coastal units across 13 U.S. states, including Connecticut. The revised Coastal Barrier Resources System (CBRS) maps are now effective and available through the CBRS Mapper

The BEACH Act expands eligibility for federal flood insurance and financial assistance in areas removed from the CBRS, while limiting new federal funding in areas added to the system. It also introduces new requirements for CBRA disclosures during real estate transactions, guidance for emergency coastal projects, and research initiatives on coastal barrier ecosystem dynamics.

Agencies involved:
U.S. Fish and Wildlife Service (FWS), Department of Housing and Urban Development, U.S. Army Corps of Engineers, and U.S. Geological Survey.

New York State
Connecticut State
Erosion
Flooding
Habitat
Land Use
Aquatic Resources
Infrastructure
Planning
Policies & Regulations
Wetlands

Guidance Tool

Level of Effort:

CT DEEP Grants Database

CT DEEP recently released a new tool allowing users to search for DEEP financial assistance programs based on a variety of parameters such as eligibility requirements, grant cycle status, project types, and more. This resource and offers “one-stop shopping” for many DEEP funding opportunities.

Connecticut State
Habitat
Land Use
Nature-based Solutions
Aquatic Resources
Stormwater Management
Water Quality
Infrastructure
Recreation & Access
Extreme Weather & Storms
Funding/Grants
Community Engagement
Wetlands
Waste Management
Green Infrastructure

Data

Level of Effort:

NYC Hazard Mitigation Plan

This website contains New York City’s Federal Emergency Management Agency–mandated Hazard Mitigation Plan, which identifies natural hazard risks and vulnerabilities that are common to New York City (NYC) and long-term strategies for reducing them. It also features a Mitigation Actions Database and Map that tracks and records actions that are taken to mitigate risk from the hazards profiled in the Hazard Mitigation Plan.​

New York State
Erosion
Flooding
Nature-based Solutions
Environmental Health Hazards
Sea Level Rise
Stormwater Management
Infrastructure
Planning
Extreme Weather & Storms
Policies & Regulations
Green Infrastructure

Data

Level of Effort:

NYSDEC Division of Water Grants Data Portal

This portal contains the comprehensive dataset of awarded projects for the Water Quality Improvement Project Program (WQIP) and the Non-Agricultural Nonpoint Source Planning and MS4 Mapping Grant (NPG). Data is displayed simultaneously on a map and data table and can be filtered by Grant Program, Applicant, County, Project Type, and Funding Source.

New York State
Habitat
Land Use
Aquatic Resources
Stormwater Management
Water Quality
Infrastructure
Incentive Programs
Planning
Funding/Grants
Wetlands
Waste Management
Green Infrastructure

Report

Level of Effort:

Averting Crisis -Zoning to Create Resilient Homes for All

This study by the Regional Plan Association assessed how flooding will threaten housing in Long Island, NYC, and Westchester County in the coming decades. It found that by 2040 as many as 1.6 million people could live in areas exposed to flooding and as many as 82,000 housing units could be lost, exacerbating housing shortages. The report includes recommendations for an integrated approach to land use planning and policy initiatives to create resilient communities.

New York State
Flooding
Land Use
Sea Level Rise
Infrastructure
Planning
Policies & Regulations

Mapper

Level of Effort:

Connecticut Housing Data Hub

The Connecticut Housing Data Hub provides users the ability to explore several categories of state- and town-wide housing data over time. Available data on the dashboard includes permitting, housing stock, rent burden, and housing programs.

Connecticut State
Land Use
Economic Impacts
Infrastructure

Guidance Tool

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FEMA National Resilience Guidance: A Collaborative Approach to Building Resilience

FEMA’s National Resilience Guidance document is intended to help all individuals, communities, and organizations understand our nation’s vision for resilience, the key principles that must be applied to strengthen resilience, and the players and systems that contribute to resilience. It also outlines how to strengthen resilience by organizing and engaging people, incorporating resilience concepts into planning efforts, creating change through policies, prioritizing projects and programs, financing resilience efforts, and measuring and evaluating resilience. Finally, the NRG includes a Resilience Maturity Model that illustrates stages in the evolution of a community’s approach to resilience.

New York State
Connecticut State
Nature-based Solutions
Infrastructure
Planning
Extreme Weather & Storms
Funding/Grants
Policies & Regulations
Community Engagement

Report

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The Fifth National Climate Assessment

The Fifth National Climate Assessment is the US Government’s preeminent report on climate change impacts, risks, and responses. It is a congressionally mandated interagency effort that provides the scientific foundation to support informed decision-making across the United States.

New York State
Connecticut State
Flooding
Nature-based Solutions
Environmental Health Hazards
Sea Level Rise
Economic Impacts
Infrastructure
Extreme Weather & Storms

Guidance Tool

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A Guide to Permitting Shoreline Modification Projects in New York’s Tidal Waters

The permitting process for shoreline modification projects is complex and it can be daunting to know where to begin. Check out New York Sea Grant’s NEW Guide to Permitting Shoreline Modification Projects in New York’s Tidal Waters for an overview of the process informed by federal, state, and local perspectives. It is intended for permit applicants using the New York State Joint Application for shoreline construction or modification, ranging from major to minor projects such as construction of floating docks, installing natural and nature-based features, bulkhead repair, development near a wetland, dredging, and invasive species removal.

New York State
Erosion
Flooding
Habitat
Nature-based Solutions
Infrastructure
Policies & Regulations
Wetlands

Guidance Tool

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Federal Highway Administration (FHWA’s) Vulnerability Assessment and Adaptation Framework

The Federal Highway Administration (FHWA’s) Vulnerability Assessment and Adaptation Framework, 3rd Edition, is a guide and collection of resources for use in analyzing the impacts of climate change and extreme weather on transportation infrastructure. Its purpose is to identify key considerations, questions, and resources that can be used to design and implement a climate change vulnerability assessment. The processes, lessons learned, and resources outlined in the framework are geared toward state departments of transportation (DOTs), metropolitan planning organizations (MPOs), and other agencies involved in planning, building, or maintaining the transportation system. It includes suggestions and examples applicable to a wide range of applications, from small qualitative studies to large, detailed, data-intensive analyses. The resources included in the framework will be added to and updated over time.

New York State
Connecticut State
Flooding
Sea Level Rise
Stormwater Management
Infrastructure
Planning
Extreme Weather & Storms

Mapper

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CT ECO Lower Long Island Sound Watershed Land Cover Viewer

The Long Island Sound Watershed Land Cover Viewer contains all dates of land cover as well as Change To, Change From, Riparian Area Land Cover, and Impervious Surface Estimate layers. It also has many layers where HUC 12 watersheds are colored based on a single land cover. 

New York State
Connecticut State
Habitat
Land Use
Aquatic Resources
Stormwater Management
Water Quality
Infrastructure
Planning
Wetlands

Mapper

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CT ECO Advanced Viewer

Connecticut Environmental Conditions Online (CT ECO) is the collaborative work of the Connecticut Department of Energy and Environmental Protection (DEEP)  and the University of Connecticut Center for Land Use Education and Research (CLEAR) to share environmental and natural resource information with the general public. CT ECO’s mission is to encourage, support, and promote informed land use and development decisions in Connecticut by providing local, state and federal agencies, and the general public with convenient access to the most up-to-date and complete natural resource information available statewide.

CT ECO includes a variety of online maps and tools for viewing Connecticut’s environmental and natural resources as well as high resolution aerial imagery, elevation data, and land cover. The Advanced Map Viewer provides flexibility to turn on and off layers of the map.

Connecticut State
Habitat
Land Use
Aquatic Resources
Stormwater Management
Water Quality
Infrastructure
Planning
Wetlands

Mapper

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Road-Stream and Tidal Crossing Prioritization Tool – Suffolk County, Long Island

Developed by The Nature Conservancy, this tool identifies priority road-stream and tidal crossings in Suffolk County for replacement or upgrades. Prioritization is based on social and ecological criteria. Additionally, it includes data on current and future projected flooding and marsh extent under various sea level rise scenarios. The tool is meant to be a screening tool for planning efforts.

New York State
Flooding
Habitat
Land Use
Nature-based Solutions
Sea Level Rise
Infrastructure
Wetlands

Mapper

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Long Island Water Reuse Road Map and Action Plan

Seatuck and the Greentree Foundation, in association with Cameron Engineering, initiated the Long Island Water Reuse Roadmap and Action Plan to catalyze the implementation of water reuse on Long Island and ensure that the strategy plays a larger and more meaningful role in safeguarding the region’s drinking water and surface water resources.

Water Quality
Infrastructure
Policies & Regulations

Mapper

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Connecticut Environmental Conditions Online (CTEco) — CTDEEP & CLEAR

Connecticut-specific site with maps, data, and visualization tools. Contains: Blue Plan, MS4 Viewer, CT Parcel Viewer, Sea Level Rise Effects on Roads & Marshes, CT DEEP Fish Community Data – Inland Waters, CT Aquaculture Mapping Atlas, CT Coastal Hazards Viewer, Carbon Stock & Land Cover Viewer

Connecticut State
Erosion
Flooding
Environmental Health Hazards
Sea Level Rise
Economic Impacts
Stormwater Management
Water Quality
Infrastructure
Extreme Weather & Storms
Policies & Regulations

Website

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Connecticut Coastal Permitting

Contains guidance documents and information on coastal permitting from the State of Connecticut.

Connecticut State
Flooding
Infrastructure
Policies & Regulations

Mapper

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FEMA Region 2 Community Profiles

These community profiles are intended to be used by municipal officials and planners working to make their communities more economically, environmentally, and socially resilient. Includes datasets related to FEMA disaster and non-disaster funding, flood insurance claims, social vulnerability, and other community stats.

New York State
Flooding
Economic Impacts
Infrastructure
Extreme Weather & Storms

Mapper

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FEMA Resilience Analysis and Planning Tool (RAPT)

RAPT provides access to important data and analysis tools to support your community before, during and after a disaster.

New York State
Connecticut State
Flooding
Environmental Health Hazards
Sea Level Rise
Infrastructure
Extreme Weather & Storms

Guidance Tool

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Georgetown Climate Center Managed Retreat Toolkit

This toolkit features legal and policy tools, best and emerging practices, and case studies to support learning and decision making around managed retreat and climate adaptation. It is meant to be used by state, territorial, and local policymakers in U.S. coastal jurisdictions

New York State
Connecticut State
Flooding
Land Use
Nature-based Solutions
Infrastructure
Policies & Regulations

Plan

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Nassau County Hazard Mitigation Plan

The Nassau County Hazard Mitigation Plan was developed through a year-long interactive planning process in close coordination with stakeholders. The process included identifying the hazards of concern within the County, assessing those hazards, estimating risk, and developing a strategy to mitigate risk to these hazards throughout the County.

New York State
Erosion
Flooding
Environmental Health Hazards
Infrastructure
Extreme Weather & Storms
Policies & Regulations

Mapper

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Neighborhoods At Risk

Neighborhoods at Risk is an easy-to-use website with interactive maps, charts, and resources to help communities identify neighborhoods that may be more impacted by climate change. It shows where people may experience unequal impacts from flooding and extreme heat.

New York State
Connecticut State
Flooding
Environmental Health Hazards
Infrastructure

Mapper

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NOAA Digital Coast – Coastal Flood Exposure Mapper

Use this mapper to visualize people, infrastructure, and natural resources exposed to coastal flood hazards. You can save and share the online maps to communicate with stakeholders. Tip: watch the short video about the tool before getting started!

New York State
Connecticut State
Flooding
Sea Level Rise
Infrastructure
Extreme Weather & Storms

Mapper

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NOAA Digital Coast – Sea Level Calculator

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.

New York State
Connecticut State
Flooding
Sea Level Rise
Infrastructure
Planning
Extreme Weather & Storms

Mapper

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NOAA Sea Level Rise Viewer

Use this web mapping tool to visualize community-level impacts from coastal flooding or sea level rise (up to 10 feet above average high tides). Photo simulations of how future flooding might impact local landmarks are also provided, as well as data related to water depth, connectivity, flood frequency, socio-economic vulnerability, wetland loss and migration, and mapping confidence.

New York State
Connecticut State
Flooding
Habitat
Land Use
Nature-based Solutions
Sea Level Rise
Infrastructure
Extreme Weather & Storms
Wetlands

Mapper

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Northeast Ocean Data Portal

User-friendly access to expert-reviewed interactive maps on key topics such as marine life and habitat, marine-based industry, use and resources in the northeastern United States. The Data Explorer allows the user to define and view any combination of data hosted on the Portal on one map.

New York State
Connecticut State
Habitat
Land Use
Aquatic Resources
Economic Impacts
Water Quality
Infrastructure
Recreation & Access
Wetlands

Mapper

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The Long Island Sound and Watershed Metadata Map Application

The Long Island Sound watershed is home to nearly 9 million people in parts of Connecticut, Massachusetts, New Hampshire, New York, Rhode Island, Vermont, and Canada. Government agencies, nonprofits, and Tribal Nations have overseen numerous projects to monitor and protect the water resources of this watershed and the sound. Although there is an abundance of data, there is no easy way to search them or a central place to manage this information. To help, the U.S. Geological Survey, the U.S. Environmental Protection Agency, and the Long Island Sound Study have created an interactive map to help users find and understand data about the water resources of the Long Island Sound and its watershed.

This mapping tool does not host data or maintain data repositories. Instead, it compiles and presents metadata from publicly accessible databases managed by State and other organizations.

Refer to this fact sheet for details about the application and its data sources: The Long Island Sound and Watershed Metadata map application

New York State
Connecticut State
Flooding
Habitat
Land Use
Environmental Health Hazards
Sea Level Rise
Aquatic Resources
Water Quality
Infrastructure
Wetlands
Waste Management

Mapper

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CTDOT Drainage Network Interactive Map

This interactive map published by the CTDOT in March 2025 allows users to view data layers that make up the state-owned and maintained drainage network across Connecticut. Culvert locations are included, as well as their water source, material components, type of conveyance, diameter, length, last inspection date, and maintenance information. Note that an ArcGIS login is required to access this resource.

Connecticut State
Flooding
Aquatic Resources
Stormwater Management
Infrastructure
Extreme Weather & Storms

Mapper

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Connecticut Sea Level Rise Effects on Roads & Marshes

To better understand how Connecticut’s coastal area marshes and roads may respond to sea level rise (SLR), Sea Level Affecting Marshes Model (SLAMM) was applied to Connecticut’s shoreline by Warren Pinnacle Consulting, Inc. This viewer displays the model’s results for Connecticut’s 21 largest marshes and all coastal area roads. For marshes, SLAMM was run two hundred times using alternative model inputs for key model parameters, including various SLR scenarios, to produce probability based results of likely future marsh conditions. For roads, the model uses a single SLR scenario of about 4.2 feet by 2100 from the base year of 2002. The Sea Level Rise Effects on Roads and Marshes projects is a project between CT DEEP and UConn CLEAR.

Connecticut State
Erosion
Flooding
Habitat
Land Use
Nature-based Solutions
Sea Level Rise
Infrastructure
Extreme Weather & Storms
Wetlands

Guidance Tool

Level of Effort:

NYS Stormwater Design Manual

The New York State Stormwater Management Design Manual provides designers with a general overview on how to size, design, select, and locate stormwater management practices at a development site to comply with State stormwater performance standards.

New York State
Stormwater Management
Infrastructure

Guidance Tool

Level of Effort:

CT MS4 Guide

Developed by the NEMO program at the UConn Center for Land Use Education and Research, this website provides guidance and tools to help Connecticut municipalities and institutions comply with the MS4 general permit.

Connecticut State
Stormwater Management
Water Quality
Infrastructure
Policies & Regulations
Green Infrastructure

Guidance Tool

Level of Effort:

NOAA Digital Coast – Ecosystem Services

Healthy ecosystems provide a wide range of benefits, from recreational opportunities to storm surge protection. These benefits are often referred to as ecosystem services. Understanding how changes to the ecosystem may affect these benefits should play a role in the community’s decision making process. This page provides a guide to learning more and key NOAA Digital Coast resources useful for this task.

New York State
Connecticut State
Habitat
Nature-based Solutions
Environmental Health Hazards
Economic Impacts
Water Quality
Infrastructure
Wetlands

Mapper

Level of Effort:

NOAA Digital Coast – Sea Level Affecting Marshes Model (SLAMM)

The Sea Level Affecting Marshes Model, or SLAMM, uses digital data and other information to simulate potential impacts of long-term sea level rise on wetlands and shorelines. Additional data related to dike locations or other protected areas, accretion rates, erosion rates, and other factors can be included within the model as optional factors. Requires ArcGIS for viewing outputs in a mapping environment and software, such as Microsoft Excel and Word, to view the text and tabular output.

New York State
Connecticut State
Erosion
Flooding
Habitat
Land Use
Nature-based Solutions
Sea Level Rise
Infrastructure
Extreme Weather & Storms
Wetlands

Training

Suffolk County Coastal Resilience Forum & Field Trip – 2025

Forum attendees gather outside the Port Jefferson Village Center for a walking tour led by Village Mayor Lauren Sheprow.
2025 Suffolk Coastal Resilience Forum. Credit: Sumayyah Uddin / NYSG

On October 8, 2025 state and local decision makers, municipal staff, and other interested parties working to address flooding, shoreline erosion and other coastal issues gathered at the Port Jefferson Village Center in Port Jefferson, NY for the 3rd Annual Suffolk County Coastal Resilience Forum. The Forum provided a chance to share information on best practices, discuss challenges, identify opportunities to increase resilience, and enhance coordination across communities. Forum attendees heard updates on State resilience initiatives from the NYS Department of Environmental Conservation and NYS Division of Homeland Security and Emergency Services, as well as presentations on new resilience tools and resources from Seatuck Environmental Association, the U.S. Geological Survey, New York Sea Grant, and Suffolk County Soil and Water Conservation District. In the afternoon, Village of Port Jefferson Mayor, Lauren Sheprow, presented on the Village’s resilience issues and initiatives and then led attendees on a walking tour of the Village highlighting flooding hotspots, challenges faced by local businesses and residents, and efforts to help mitigate flooding and increase community resilience.

The event was hosted by Long Island Sound Partnership and New York Sea Grant, in partnership with the Village of Port Jefferson and Suffolk County Soil and Water Conservation District. 

Erosion
Flooding
Nature-based Solutions
Sea Level Rise
Stormwater Management
Infrastructure
Incentive Programs
Planning
Extreme Weather & Storms
Funding/Grants
Policies & Regulations
Long Island Sound Partnership logo New York Sea Grant logo Suffolk SWCD

Training

Nassau County Coastal Resilience Forum & Field Trip – 2025

Nassau Coastal Resilience Forum field trip to Sands Point Preserve beach and bluff.

2025 Nassau Coastal Resilience Forum field trip to Sands Point Preserve. Credit: Sumayyah Uddin / NYSG

On October 9, 2025 state and local decision makers, municipal staff, and other interested parties working to address flooding, shoreline erosion and other coastal issues gathered at the Sands Point Preserve Conservancy in Sands Point, NY for the 3rd Annual Nassau County Coastal Resilience Forum. The Forum provided a chance to share information on best practices, discuss challenges, identify opportunities to increase resilience, and enhance coordination across communities. Forum attendees heard updates on State resilience initiatives from agencies like the NYS Department of Environmental Conservation and NYS Division of Homeland Security and Emergency Services, as well as presentations on new resilience tools and resources from Seatuck Environmental Association, the U.S. Geological Survey, New York Sea Grant, Cornell Cooperative Extension of Nassau County, and Nassau County Soil and Water Conservation District. In the afternoon, Forum attendees were given a guided tour of the recent expansions to the bluff stabilization project at the Preserve.

The event was hosted by Long Island Sound Partnership and New York Sea Grant, in partnership with the Sands Point Preserve Conservancy and Nassau and Suffolk County Soil and Water Conservation Districts. 

New York State
Incentive Programs
Green Infrastructure
Waste Management
Wetlands
Policies & Regulations
Funding/Grants
Extreme Weather & Storms
Recreation & Access
Planning
Erosion
Infrastructure
Stormwater Management
Sea Level Rise
Environmental Health Hazards
Nature-based Solutions
Land Use
Habitat
Flooding
Long Island Sound Partnership logo New York Sea Grant logo Nassau Coastal Erosion Forum

Training

3rd Annual SRC Workshop: Session 1 – SRC Resilience Assistance Programs

The Long Island Sound Sustainable and Resilient Communities (SRC) Team held our 2024 Annual Workshop virtually as three sessions over two days. Session topics focused on our assistance programs, new regional resilience resources and tools, and a discussion on planning for inundation and different considerations communities may face.

Session 1 – SRC Resilience Assistance Programs was held on Tuesday, December 10th from 10-11:30 AM. Participants learned about our Sustainable and Resilient Communities resilience assistance programs and heard from communities who have successfully utilized them to advance resilience project plans, build capacity, and secure competitive grant funding!

New York State
Connecticut State
Erosion
Flooding
Habitat
Land Use
Nature-based Solutions
Sea Level Rise
Stormwater Management
Water Quality
Infrastructure
Planning
Recreation & Access
Extreme Weather & Storms
Funding/Grants
Policies & Regulations
Community Engagement
Green Infrastructure
New York Sea Grant logo Connecticut Sea Grant logo

Training

SRC Annual Bi-State Workshop 2023

The second annual Long Island Sound Bi-State Sustainable and Resilient Communities Workshop brought together nearly 200 people virtually on Dec. 7, 2023 to learn about a new Long Island Sound Resilience Resource Hub (launching in early 2024), hear from communities and groups around the Sound working on resilience planning, and consider pathways for updating codes and ordinances. Videos of the workshop’s six sessions are available on YouTube. They can be accessed below along with supporting documents.

New York State
Connecticut State
Erosion
Sea Level Rise
Economic Impacts
Stormwater Management
Water Quality
Infrastructure
Incentive Programs
Extreme Weather & Storms
Funding/Grants
Policies & Regulations
Community Engagement
Green Infrastructure
Connecticut Sea Grant logo New York Sea Grant logo

Training

SRC Annual Bi-State Workshop 2022

The first annual Long Island Sound Bi-State Sustainable and Resilient Communities Workshop brought together more than 260 people virtually on Dec. 1, 2022 to learn about opportunities to increase the resilience of the Sound’s communities to climate change and other environmental threats. Interactive sessions included opportunities to learn more about the SRC Extension Professionals’ needs assessment findings and recommendations, the newly released Long Island Sound Resilience Grant Writing Assistance Program, and tips for success with Long Island Sound funding opportunities. Concurrent breakout sessions highlighted the work of partners related to shoreline planning and implementation, using green infrastructure for stormwater management, sustainable climate planning for relocation, and new sustainability/resilience tools available in both New York and Connecticut. Videos of the workshop’s six sessions are available on YouTube. They can be accessed below along with supporting documents.

New York State
Connecticut State
Erosion
Flooding
Habitat
Land Use
Nature-based Solutions
Sea Level Rise
Stormwater Management
Water Quality
Infrastructure
Extreme Weather & Storms
Funding/Grants
Policies & Regulations
Wetlands
Green Infrastructure
Connecticut Sea Grant logo New York Sea Grant logo

Case Study

Plan

East Haddam, CT

East Haddam Community Resilience Building Summary of Findings

With support from the Nature Conservancy and Sustainable CT, East Haddam organized a Community Resilience Building process and workshop, the results of which were compiled into this summary. The team engaged with community members to determine the present hazards and vulnerabilities and identify resilient solutions.

Connecticut State
Water Quality
Waste Management
Wetlands
Community Engagement
Policies & Regulations
Funding/Grants
Extreme Weather & Storms
Recreation & Access
Infrastructure
Erosion
Stormwater Management
Aquatic Resources
Sea Level Rise
Nature-based Solutions
Land Use
Habitat
Flooding

Case Study

Project

Norwalk, CT

Webster Street Parking Lot Green Infrastructure Project

In 2019, the City of Norwalk secured a LIS Future Fund grant to install green infrastructure in the Webster Street Parking to reduce the impacts of stormwater on the Norwalk River and Harbor and mitigate local flooding of surrounding businesses through the installation of four different types of infiltration and bio-retention structures:
1) Underground infiltration systems.
2) Retention basins and curb inlet planters in eight different areas.
3) Porous pavement with storage in two areas.
4) Infiltration gutters and tree filters in two other areas.

Connecticut State
Flooding
Stormwater Management
Infrastructure
Green Infrastructure

Case Study

Project

Sea Cliff, NY

Scudders Pond Subwatershed Improvements

The Hempstead Harbor Protection Committee and Village of Sea Cliff completed subwatershed improvements at Scudders Pond to address stormwater drainage problems impacting the water quality of the pond and Hempstead Harbor, highlighted as a priority in the 1998 Hempstead Harbor Water Quality Improvement Plan. The improvements included dredging the pond, installing a hydrodynamic separator to intercept sediment, removing invasive Phragmites australis and replacing with native plants, realigning the stream to reduce erosion, redirecting the stormwater from residences to the bioswale, creation of a biofilter wetland area, replacement of the weir between the upper and lower ponds and weir at Shore Road.

New York State
Erosion
Habitat
Nature-based Solutions
Aquatic Resources
Stormwater Management
Water Quality
Infrastructure
Planning
Wetlands
Green Infrastructure

Case Study

Plan

Huntington, NY

Crab Meadow Watershed Hydrology Study and Stewardship Plan

This comprehensive study and plan, funded through the National Fish and Wildlife Foundation, Long Island Sound Futures Fund, identifies initial strategies to maintain and enhance the local watershed resources of Crab Meadow. It is meant to be a land management tool to guide the implementation of best practices. The plan was developed in consultation with many partners and stakeholders. There is now significant community buy-in to take action to protect and restore this important watershed. 

 

Following adoption of the plan, the Town of Huntington began working with US Fish and Wildlife Service and Audubon to study and restore Crab Meadow marsh and implement recommendations from the Stewardship Plan. Audubon, in partnership with Town of Huntington and USFWS, received a 2024 Long Island Sound Futures Fund Grant ($429K) to develop design plans for marsh restoration at Crab Meadow.

New York State
Habitat
Land Use
Nature-based Solutions
Aquatic Resources
Water Quality
Infrastructure
Recreation & Access
Wetlands
Green Infrastructure