1. Geology and hydrology of the deep bedrock aquifers in eastern Colorado Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1987 Resource Type: Map Access & Availability: Loading
2. Summary of hydrologic information for the Denver coal region, Colorado Author/Creator: Norris, J. Michael, author Publication/Creation: Lakewood, Colorado : U.S. Geological Survey, 1986 Resource Type: Book Access & Availability: Loading