1. Map showing flood-prone areas, Colorado Springs-Castle Rock area, Front Range Urban Corridor, Colorado [cartographic material] Yale Public content 1975. 2013-06-13T13:33:10Z. 2013-06-26T19:51:05Z. McCain, Jerald F. The Survey. English. Public. Front Range (Colo. and Wyo.), Colorado, Douglas County, Elbert County, El Paso County, Teller County, and Fremont County.