Connect with IWR

IWR Headquarters

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

IWR Headquarters
7701 Telegraph Road (Casey Building)
Alexandria, Virginia 22315

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

Email: IWR@usace.army.mil

Website: www.iwr.usace.army.mil

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