• Email: CEMVR-HydroSurveyWeb@usace.army.mil
• Normal business hours are 7:30 - 4:00 pm (CST) Monday through Friday
• Information Assistance: 309-794-5505
• Fax: 309-794-5180
• Mailing Address:

                USACE - Rock Island
                ATTN: OD-T
                Clock Tower Bldg.
                PO Box 2004
                Rock Island, IL 61204-2004