Delaware Registry


Delaware started its Watershed Resources Registry project in March of 2016. The Delaware team was inspired by neighboring Maryland. The collaborative effort included staff from Delaware’s Department of Natural Resources Delaware River and Environmental Control and Department of Transportation, US Environmental Protection Agency Region 3 ,US Army Corps of Engineers Philadelphia District, US Fish and Wildlife Service, horseshoe crab US Federal Highway Administration, and Delaware Center for the Inland Bays, among others. The project was funded in part by a US Federal Highways Administration grant. If you're interested in learning more about Delaware's WRR project, please contact a representative below.

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Additional Resources

Spatial Analyses

Get more information about the spatial analyses and factors selected by the state of Delaware for their models.

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Listing of Map Services

Get more information about the map layers that are available on the Delaware WRR interactive map

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User Guide

Get more information about the WRR application and how to use it successfully.

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User Feedback Survey
User Feedback Survey
For any problems, requests, or suggestions to improve the WRRs, please fill out our user survey.


For more information on Delaware's WRR you can contact the following:

Name Agency Phone Email
Mark Biddle Delaware Natural Resources and Environmental Control (302) 739-9939
Theresa Foye Maryland Environmental Service (410) 729-8534
Christie Bonniwell Delaware Department of Transportation (302) 760-2369
Brian Jennings US Fish & Wildlife Service (703) 501-0593
Michael Yost US Army Corps of Engineers, Philadelphia District (392) 736-9736
Michael Harris New Castle County (302) 395-5806
Ellie Mortazavi New Castle County (302) 395-5732
Stacy McNatt, PE New Castle County (302) 395-5878