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WSP02495
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Last modified
1/26/2010 12:37:15 PM
Creation date
10/11/2006 11:08:37 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
5970
Description
Flood Protection Section - Miscellaneous Reports
State
CO
Basin
Statewide
Date
3/1/1981
Author
USGS
Title
Water Resources Investigations of the US Geological Survey in Colorado - Fiscal Year 1981 - Open-File Report 81-150
Water Supply Pro - Doc Type
Report/Study
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<br />001533 <br /> <br />PROJECT TITLE: Ground-Water Resources of the Denver Basin (fig. 15) <br /> <br />COOPERATING AGENCIES: Adams County Board of Commissioners; Arapahoe County; City <br />and County of Denver, Board of Water Commissioners; Colo- <br />rado Department of Natural Resources, Division of \,/ater <br />Resources, Office of the State Engineer; Elbert County <br />Planning Department; and the El Paso County Board of <br />Commissioners <br /> <br />PROJECT CHIEF: Stanley G. Robson, District Office, Lakewood <br /> <br />PERIOD OF PROJECT: July 1975 to September 1984 <br /> <br />l'Poblem.--The Denver Basin is underlain by four major bedrock aquifers. In- <br />creased pumpage from these aquifers, especially in localized areas in and near the <br />major population centers along the Front Range, has resulted in a rapid decline of <br />the aquifers' potentiometric surfaces because water is being withdrawn from the <br />aquifers faster than it is being recharged. The geohydrology of the basin is com- <br />plex and few data are available to determine water movement within and between <br />aquifers, major areas of recharge to and discharge from the aquifers, chemical <br />qual ity of water in the aquifers, and development potential of the multlple- <br />aquifer system. A knowledge of the geohydrologic system of the basin is needed by <br />State and local officials'so that they can more effectively manage the resource. <br /> <br />Objectives.--Collect and interpret geohydrologic data needed to develop a <br />computer model of the ground-water-flow system. Collect and interpret ground- <br />water-qual ity data to better evaluate the water-supply potential of the bedrock <br />aqui fers. Develop a computer model, of the ground-water flow system that can be <br />used to evaluate long-term effects of various water-management alternatives. <br /> <br />Approaoh.--Collect and interpret geohydrologic data from wells completed in <br />each aquifer. Establ ish an observation-well network to monitor water levels in <br />each aquifer. Collect and interpret water-qual ity data from each aquifer. Deter- <br />mine coefficients of storage and hydraulic conductivity for each aquifer. Prepare <br />maps summarizin9 all data collected. Develop a computer model of the ground- <br />water-flow system. <br /> <br />Progress.--Geohydrologic data have been obtained from about 700 wells. Se- <br />lected water-quality data have been obtained from about 500 wells; comprehensive <br />water-qual ity data have been obtained from about 100 wells. Aquifer tests have <br />been run on 80 bed rock we 11 s. and data have been camp i 1 ed for an add it i ona 1 150 <br />aquifer tests. Collection of pumpage data and analysis of well data have begun. <br />Four hydrologic atlases showing the extent, thickness, structure, sand content, <br />and water quality of the four bedrock aquifers have been prepared or are in the <br />process of publication. <br /> <br />Plans.--Complete <br />charge and discharge. <br />i c-data report. <br /> <br />the aquifer testing and pumpage estimates. Estimate re- <br />Begin construction of a digital model. Prepare a hydrolog- <br /> <br />39 <br />
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