Mapper

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.

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).

Interactive map with county-level disaster declaration information and Congressional Districts for 2011-2023. Also includes a fact sheet and tables.

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.

Connecticut EJ Screening Tool is an interactive resource that combines both community and data-driven approach that incorporates environmental burdens and demographic indicators. This map allows users to explore the environmental health and the conditions (socioeconomic and or other distinguishing community characteristics) within a specific region, town, city, and or entire state.

The data included in this map finalize into a score that allows users to understand the relationship between the community and environmental justice. Through the presentation of this information, citizens and policymakers alike can understand what communities are experiencing and form policies that reshape these matters.

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. 

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.

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.

Data shows polygon locations of Potential Environmental Justice Areas (PEJA). PEJA’s have been identified based on data from the 2014-2018 5-year American Community Survey (ACS), conducted by the US Census Bureau. Environmental justice efforts focus on improving the environment in communities, specifically minority and low-income communities, and addressing disproportionate adverse environmental impacts that may exist in those communities. The designated areas are considered for additional outreach within the permitting process, for grant eligibility, and for targeted enforcement of Environmental Conservation Law violations.

The U.S. Drought Monitor (USDM) is a map released every Thursday, showing where drought is and how bad it is across the U.S. and its territories. The map uses six classifications: normal conditions, abnormally dry (D0), showing areas that may be going into or are coming out of drought, and four levels of drought: moderate (D1), severe (D2), extreme (D3) and exceptional (D4).

This interactive map provides information on boat ramps and saltwater fishing access points on Long Island in Nassau and Suffolk Counties.

This NYSDEC tool provides information on shellfish closures in NY’s marine waters and can be used to help resource users understand where it is safe to harvest to shellfish.

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.

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

The River Revival Project Map is a GIS-based map that identifies every river and stream in Nassau and Suffolk Counties. It also identifies the tributaries where river herring runs are known to exist, and shows all existing, planned or proposed connectivity projects on the island. The map is intended to be a tool to engage citizens in the restoration of rivers and streams in their communities.

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.

Coastal Resilience is a Connecticut-based decision support tool that provides local, regional, state and national stakeholders a step-wise process to guide decisions to reduce the ecological and socio-economic risks of coastal and inland hazards.

In cities across America, trees have historically been planted along race and class lines. Ensuring equitable tree cover across every neighborhood can help address social inequities so that all people can thrive. The map shows your city or town’s current Tree Equity Score and how it can be improved. Each score is calculated using a science-based approach and readily available data from a variety of sources.

This mapper is intended to provide federal, state, and local managers with tools to estimate the vulnerability and ecosystem service potential of wetlands. It allows you to display information on the unvegetated to vegetated ratio (UVVR), marsh elevation, tidal range, and shoreline change rates for New York’s tidal wetlands.

WaterTraq program is the first of its kind in New York State that allows for research of groundwater contamination by location, compound, depth of wells, and other criteria.

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.

This floodplain mapper shows the estimated boundary of future coastal floodplains for different sea level rise scenarios for New York State. Customize a scenario by choosing the amount of sea level rise in inches and a coastal flood recurrence interval.

This mapper, developed through the New York Climate Act, was developed by the State Climate Justice Working Group to identify disadvantaged communities to ensure that frontline and otherwise underserved communities benefit from the state’s historic transition to cleaner, greener sources of energy, reduced pollution and cleaner air, and economic opportunities. The interactive map identifies areas throughout the State that meet the disadvantaged community Criteria as defined by the Climate Justice Working Group.

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.

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.

The CCVI combines built, social, and ecological factors to identify areas that are vulnerable to flooding and heat related impacts of climate change. These mapping tools can be used to view vulnerability at both a regional scale and at specific sites to see how factors are contributing.

This interactive map can help you find your way to over 350 diverse shoreline sites in Connecticut that provide a variety of opportunities for coastal enjoyment.

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

The Map Viewer is the state’s first geospatial collection of key ecological, biological, and human-use data intended to assess the viability of a coastal location to support shellfish restoration. Further, qualitative oyster habitat surveys characterize, for the first time, the condition of intertidal oyster populations across the state and establish a baseline to inform the planning of future quantitative assessments.

This web mapping application displays Water Quality Plans (TMDLs) developed by the 303 (d) program in conjunction with Water Quality Assessments conducted by the 305 (b) program.

This resource provides a variety of Aquaculture geodata in CT and can be used to support the decision-making process for aquaculture permitting applications, but does not include authoritative content.

EJScreen is an EPA environmental justice mapping and screening tool comprised of a nationally consistent dataset and approach for combining environmental and demographic socioeconomic indicators. EJScreen users choose a geographic area; the tool then provides demographic socioeconomic and environmental information for that area.

This mapper provides a view of estuary data and the option to retrieve and save information about water quality, nutrients, land use, etc. There are also instructions provided to assist with usage.

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.

The FEMA Flood Map Service Center (MSC) is the official public source for flood hazard information produced in support of the National Flood Insurance Program (NFIP). Use the MSC to find your official flood map.

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.

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

The purpose of the interactive viewer is to illustrate the fate of significant marsh systems on Long Island Sound under future Sea-Level Rise conditions. Model results are combined with tax-parcel information and integrated with information about marsh ecosystem services to assist municipalities and conservation groups in defining and assessing various land-management alternatives.

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.

The tool is designed to support shellfish and seaweed aquaculture siting in New York and Connecticut’s coastal waters.

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!

Use this guide to walk through the process of how to calculate and plot coastal flood frequency. Primary intended audience: planners, engineers, etc. This guide outlines steps for calculating customized scenarios of local coastal flood frequencies using the same methods as NOAA’s Sea Level Rise Viewer. The tool uses flood threshold data from the National Weather Service and the Inundation Analysis Tool from NOAA’s Center for Operational Oceanographic Products and Services.

This map identifies priority salt marshes within each state that are good candidates for restoration, enhancement, and/or management to provide persistent high-quality Saltmarsh Sparrow nesting habitat. A second map shows priority marsh migration space for easement and acquisition.

Shows areas vulnerable to near-term flooding from different combinations of sea level rise, storm surge, tides, and tsunamis, or to permanent submersion by long-term sea level rise. Within the U.S., it incorporates the latest, high-resolution, high-accuracy lidar elevation data supplied by NOAA (exceptions: see Sources), displays points of interest, and contains layers displaying social vulnerability, population density, and property value.

Water quality is strongly related to land use. New high-resolution land cover data for Connecticut has made it possible to look at the land/water connection at a finer scale than ever before. Using the three sections of this website below, you can learn about our study, explore the landscape surrounding the over 4,300 local waterways in our state and the implications for the health of these waterways, and test out landscape change scenarios to see what effects they might have.

Shows various SLR scenarios and flood event scenarios calibrated for the Long Island Sound CT coast. Also includes FEMA Limit of Moderate Wave Action boundary for referencing building codes.

The purpose of the Long Island Sound Blue Plan is to identify and protect places of traditional use and ecological significance, and to minimize conflicts, now and in the future. Contains data layers with policy and planning areas, ecologically significant areas, and significant human use areas.