prepared by Water Resources Support Center. prepared by the Water Resources Support Center. prepared by IIT Research Institute. prepared by the Water Resources Support Center, U.S. Army Corps of Engineers. prepared by the Water Resources Support Center ; U.S. Army Corps of Engineers. U.S. Army, Corps of Engineers ; prepared by the Water Resources Support Center. prepared by the Water Resources Support Center ; U.S. Army, Corps of Engineers. prepared by Motorola Technical Information Center.