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Hudson Valley Natural Resource Mapper

A Tool for Viewing Natural Features in the Hudson River Estuary Watershed

The Hudson Valley Natural Resource Mapper

The Hudson Valley Natural Resource Mapper is an online, interactive tool designed to help identify and understand important habitat and water resources, the connections between them, and their broader regional context. The mapper also highlights Hudson River recreation sites and other areas where residents and visitors can enjoy the region's natural beauty . By bringing together information about natural features such as streams, wetlands, and large forests, as well as recreation amenities and existing protected lands, communities can begin to identify conservation priorities and strategies that can be incorporated into local land-use planning. This process will help ensure that future generations continue to enjoy the numerous benefits provided by the Hudson Valley's natural systems.

NEW Forest Condition Index and Core Forest layers are now available under Biodiversity Layers. The old Large Forest layer has been removed.

Updates to the HUC8, HUC10, and HUC12 Watershed land cover statistics are available under Stream and Watershed Layers.

Updates to the Assessed Road-Stream Crossings are now available under Stream and Watershed Layers.

Updates to the Known Important Areas for Rare Animals and Rare Plants are now available under Biodiversity Layers.

Critical Environmental Areas are now available under Reference Layers.

User Resources

Hudson Valley Natural Resource Mapper Fact Sheet (PDF)

Introduction to the Hudson Valley Natural Resource Mapper May 15, 2019 webinar recording (leaves DEC website) Note: Use the WebEx Network Player Playback function to stream the webinar recording to your computer. It may take some time for the recording to open.

Natural Heritage Important Areas April 15, 2020 webinar recording (leaves DEC website)

Forest Condition Index May 20, 2020 webinar recording (leaves DEC website)

Mapper Contents

The Natural Resource Mapper contains over 30 geographic data sets organized under seven categories:

  • Hudson River Estuary
  • Stream and Watershed
  • Wetland
  • Forest
  • Biodiversity
  • Scenic and Recreation
  • Reference

Users can zoom in to a focus area and turn layers on or off to produce custom, printable maps, as well as query data layers for additional information.

Mapper Uses

The maps are a source of information for landowners, municipal officials, project sponsors, watershed groups, and other organizations engaged in land-use decision-making, environmental assessment, conservation, and watershed planning. They can help to visualize an area's resources-where they occur and how they relate to each other, their context, and existing development-and provide a foundation for informed land-use planning and decision-making. They can also serve as a starting point for natural resources inventories, open space plans, and watershed plans. Residents and visitors may also use the maps to learn about scenic areas and recreation sites along the Hudson River, and the rich environmental resources they support.

Visit the Important Links on the right side of this page for information on related training, technical assistance, and publications available from the Hudson River Estuary Program.

Browser Recommendations:

The Natural Resource Mapper works in Internet Explorer, Chrome, and Firefox and will run best in the most current versions of these browsers.


This tool is intended for general information and planning purposes and does not indicate the extent of DEC regulatory authority. It contains data compiled from numerous sources and may not be complete or accurate. Any resource shown on a map should be verified for legal purposes, including environmental review. Contact your DEC regional office for assistance with regulatory questions. Hudson River Estuary Program staff can assist with interpreting and using the data provided.