1. Generalized altitude and configuration of the water table in parts of Larimer, Loogan, Sedgwick, and Weld Counties, Colorado Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Washington, D.C. : Department of the Interior, United States Geological Survey, 1983 Format: Map Access & Availability: Loading
2. 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 Format: Map Access & Availability: Loading