Rainfall

To help Americans anticipate how changing climate conditions might affect their homes and businesses, the United States Global Change Research Program conducts a comprehensive review of scientific information on climate trends and impacts in our country every four years. The 5th National Climate Assessment — often referred to as NCA5 — was published in 2023.

This Interactive Atlas provides access to data compiled for NCA5. Browse the collection for your own investigations, or access the data for custom analysis and mapping.

The New York State Climate Impacts Assessment explores current and future climate change impacts to New York State communities, ecosystems, and economy. The New York State Energy Research and Development Authority (NYSERDA) assembled more than 250 New York–based, national, and Indigenous climate science experts and representatives from diverse communities and industries across the state to contribute to this assessment. The findings are intended to help residents, businesses, and decision-makers across the state plan and prepare for climate change impacts.

Awards small grants in support of grassroots efforts and community-based environmental work in New England. The Grassroots Fund utilizes participatory grantmaking to move resources to New England grassroots groups working at the intersections of Environmental Justice. The program is geared toward groups who have some experience implementing a project in their community. Grants support groups to deepen their work by further developing a community vision, lowering barriers to participation, identifying new stakeholders, and working to bring more voices and lived experiences into core decision-making processes.

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

The Flood Mitigation Assistance grant program is a competitive program that provides funding to states, federally recognized Tribal governments, U.S. territories, and local governments. Since the National Flood Insurance Reform Act of 1994 was signed into law, funds are used for projects that reduce or eliminate the risk of repetitive flood damage to buildings insured by the National Flood Insurance Program.

The Green Innovation Grant Program (GIGP) supports projects across New York State that utilize unique EPA-designated green stormwater infrastructure design and create cutting-edge green technologies. Competitive grants are awarded annually to projects that improve water quality and mitigate the effects of climate change through the implementation of one or more of the following green practices: Green Stormwater Infrastructure, Energy Efficiency, Water Efficiency and Environmental Innovation.

Local Waterfront Revitalization Program provides grants to municipalities along New York’s coasts or designated inland waterways to advance the preparation or implementation of strategies for community and waterfront revitalization through the following grant categories: 1) Preparing or Updating a Local Waterfront Revitalization Program (LWRP), 2) Updating an LWRP to be more Resilient to Climate Risk,s 3) Preparing an LWRP Component, including a Watershed Management Plan, and 4) Implementing a Local Waterfront Revitalization Program or a completed LWRP Component.

Awards small grants in support of grassroots efforts and community-based environmental work in New England. The Grassroots Fund utilizes participatory grantmaking to move resources to New England grassroots groups working at the intersections of Environmental Justice. The program is geared toward groups who have some experience implementing a project in their community. Grants support groups to deepen their work by further developing a community vision, lowering barriers to participation, identifying new stakeholders, and working to bring more voices and lived experiences into core decision-making processes.

The Flood Mitigation Assistance grant program is a competitive program that provides funding to states, federally recognized Tribal governments, U.S. territories, and local governments. Since the National Flood Insurance Reform Act of 1994 was signed into law, funds are used for projects that reduce or eliminate the risk of repetitive flood damage to buildings insured by the National Flood Insurance Program.

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.

Increased development and the historic construction of a dam on Sunken Meadow Creek in the 1950’s led to reduced tidal exchange, increased water levels in the creek, poor water quality, and the proliferation of invasive species. In 2008 a number of partners (NYS OPRHP, NOAA, NYSDEC, LISS, TNC, Save the Sound, USFWS, LI Botanical Society) came together to work to restore the degraded marsh habitat around Sunken Meadow Creek, increase tidal flow, improve aquatic organism passage, limit invasives, and improve water quality. A restoration feasibility study was completed in 2010. In 2012 Superstorm Sandy blew out the dam on Sunken Meadow Creek, naturally kick-starting restoration. Following Superstorm Sandy, the project partners were able to quickly capitalize on available funding and grants, due to their prior planning efforts. A bridge was built across the Creek where the dam blew out, salt marsh habitat was restored at three locations, green infrastructure was installed in one of the parking areas to capture and treat stormwater runoff, fish passage feasibility on the creek was investigated, and education and outreach was conducted to thousands of people. These projects were completed in 2019. Now, with funding through Long Island Sound Futures Fund, Audubon NY is leading a large-scale marsh restoration project at Sunken Meadow Creek to restore important high-marsh habitat for at risk species, like the Saltmarsh Sparrow, and to increase the resilience of the marsh in the face of rising sea levels. Audubon will be working to finalize the designs and secure permits over the next two years, with on-the-ground restoration expected in 2026.

The City of New Haven has installed 286 right-of-way bioswales throughout the city as part of a multifaceted approach to reducing flooding in the downtown area. Right-of-way bioswales are engineered planted areas that are located on sidewalks. They are designed to capture and infiltrate stormwater into the ground that would otherwise directly enter a storm drain. These bioswales were installed as the result of various partnerships and funding opportunities related to flood prevention, localized drainage solutions, combined sewer overflow mitigation, research, and traffic calming projects.

Project Lead

City of New Haven, Dept of Engineering

Project Partners

Urban Resources Initiative, EMERGE Inc., Save the Sound, Yale School of the Environment, and Quinnipiac University, among others.

Save the Sound’s Sound Health Explorer displays information on water quality for Long Island Sound beaches, embayments, and open waters.

This Story map illustrates climate change projections, considering scenarios that factor in temperature, precipitation, extreme heat, storms, and sea level.

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.

This website and the associated tools can be used by planners and engineers to help understand how rising sea levels, more intense storms, and heavy rainfalls affect stormwater systems, and to generate reports that can be used to inform planning.

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.

MyCoast NY collects and catalogs photos provided by volunteers that document changing water levels, shorelines, and hazardous weather impacts across New York’s varied coasts and water bodies. Photos are linked to real-time environmental conditions to create flooding and storm impact reports that help stakeholders like government agencies, business owners, and residents understand our changing environment and make informed decisions.

Providex guidance and tools to help Connecticut municipalities and institutions comply with the MS4 general permit.

This program provides financial rewards for homeowners on Long Island who add green alternatives to their properties that benefit the environment. It also provides guidance on how to install green alternatives on your property.

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

This guide gives community leaders five main strategies to carry out Nature-Based Solution projects: 1) Building Strong Partnerships, 2) Engaging the Whole Community, 3) Matching Project Size With Desired Goals and Benefits, 4) Maximizing Benefits, and 5) Designing for the Future. This is not a technical guide for planning, constructing or funding NBS. It covers the value of each strategy and suggests how to move forward with NBS projects.

The site includes updated design storm rainfall amounts. Includes estimates of extreme rainfall for various durations (from 5 minutes to 10 days) and recurrence intervals (1 year to 500 years). Regional extreme rainfall maps and graphic products are also available. This updates existing analyses to account for changes such as the increasing frequency of heavy rainfall events.

This online information session held Sept. 19, and repeated Sept. 21, provides an introduction to resilience planning in the Long Island Sound region. It includes discussions on local climate impacts and projections, resilience planning strategies, and climate certification programs for both New York and Connecticut municipalities. In addition to the main presentation, videos of the Connecticut and New York breakout sessions can be accessed below. The presentations and other resource materials are available here.

On July 18th, 2023 NYS Department of Environmental Conservation and NY Sea Grant hosted a free public webinar to share more about what steps homeowners can take in their own yards to protect and improve Long Island waters! Featured experts from New York Sea Grant, NYS Department of Environmental Conservation, Long Island Commission for Aquifer Protection, Cornell Cooperative Extension Suffolk County, and Rewild Long Island discussed smart fertilizer practices, water conservation, and native plantings.

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.