[Sheet 1] Map showing extent of alluvial valley floors and overburden thickness above the Watkins lignite seam, Adams and Arapahoe Counties, Colorado -- [Sheet 2] Isopach map of the Watkins lignite seam, Adams and Arapahoe Counties, Colorado., Photocopy; blue line print., No collective title given on either sheet., "This is a preliminary map subject to revision and is a part of U.S.G.S. Grant 14-08-0001-G-487, a study of the environmental impact of energy resource development in the Denver Basin.", Description based on print version record.
prepared by the Colorado Water Availability Task Force; Impact Task Forces ; presented by the Colorado Water Availability Task Force; Review and Reporting Task Force., "April 14, 2003.", Online resource; title from PDF cover (viewed April 2016)
Caption title., Scarp investigations on the eastern plains -- Colorado avalanche information opened for the 22nd season -- NASA study -- Mine subsidence information center -- CO₂ sequestration study -- Study concerning whether the CGS should move to the Colorado School of Mines -- Land use reviews -- Value of Colorado minerals and mineral fuels soars -- Coal -- Artificial recharge report published -- 2004 publications -- Yule marble becomes Colorado's official state rock., Mode of access: World Wide Web.