US Army Corps of Engineers
Institute for Water Resources

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IWR Headquarters

National Capital Region (NCR)

U.S. Army Corps of Engineers
Institute for Water Resources
National Capital Region (NCR)
7701 Telegraph Road (Casey Building)
Alexandria, Virginia 22315

Main Tel: (703) 428-8015
Main Fax: (703) 428-8171

Email: DLL-CEIWRExecutiveOffice@usace.army.mil

Website: www.iwr.usace.army.mil

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