<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>John B. Weeks</dc:creator>
  <dc:date>1978</dc:date>
  <dc:description>The digital model used to simulate ground-water flow in the aquifer system in the basin drained by Piceance and Yellow Creeks in northwestern Colorado is described in detail. The model is quasi three-dimensional in that it simulates ground-water flow in a multiaquifer system by assuming horizontal flow in the aquifers and vertical flow through the confining layers separating the aquifers. The model uses the iterative alternating-direction implicit procedure to solve the finite-difference flow equations. The digital model is documented by a program listing and flow charts. Data used in the model and sample output are presented to document the simulation of steady-state flow in the aquifer system. The variables used in the computer program and program options are discussed in detail. (Woodard-USGS)</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/wri7846</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>U.S. Geological Survey, Water Resources Division,</dc:publisher>
  <dc:title>Digital model of ground-water flow in the Piceance Basin, Rio Blanco and Garfield Counties, Colorado</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>