1. Flood boundaries and water-surface profiles for the computed 50-, 100-, and 500-year floods, Childs Draw and tributary, near Cheyenne, Wyoming, August, 1991 Yale Public content 1993. 2002-06-01T04:00:00Z. 2002-06-01T04:00:00Z. Geological Survey (U.S.). The Survey. English. Public. Wyoming and Cheyenne Region.