IWR Locations

Navigation & Civil Works Decision Support Center

U.S. Army Corps of Engineers
Institute for Water Resources 

Navigation and Civil Works Decision Support Center (NDC)
7701 Telegraph Road
Alexandria, VA  22315

Email:  CEIWR-NDC.WEBMASTER@usace.army.mil

Website:  https://www.iwr.usace.army.mil/About/Technical-Centers/NDC-Navigation-and-Civil-Works-Decision-Support//

Privacy and Security Notice

Visitors without a Common Access Card must coordinate with an IWR employee in advance.