Use of a ground-water flow model with particle tracking to evaluate ground-water vulnerability, Clark County, Washington

by Snyder, Daniel T.
Published: U.S. Geological Survey : For sale by Information Services, 1998

Evaluation of factors that influence estimated zones of transport for six municipal wells in Clark County, Washington

by Orzol, L. L.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 1999

Use of a ground-water flow model with particle tracking to evaluate ground-water vulnerability, Clark County, Washington

by Snyder, Daniel T.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; Branch of Information Services [distributor], 1996

Quality of ground water in Clark County, Washington, 1988

by Turney, Gary L.
Published: U.S. Geological Survey ; Books and Open-File Reports Section, [distributor], 1990

Comparison of chlorofluorocarbon age-dating with particle-tracking results of a regional ground-water flow model of the Portland Basin, Oregon and Washington

by Hinkle, Stephen R.
Published: U.S. Dept. of the Interior, U.S. Geological Survey : For sale by Branch of Information Services [distributor], 1997

Modifications of the U.S. Geological Survey modular, finite-difference, ground-water flow model to read and write geographic information system files

by Orzol, L. L.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; [Books and Open-File Reports Section, distributor], 1992

Quality of ground water in Clark County, Washington, 1988

by Turney, Gary L.,
Published: U.S. Geological Survey, 1990

Estimation of ground-water recharge from precipitation, runoff into drywells, and on-site waste-disposal systems in the Portland Basin, Oregon and Washington

by Snyder, Daniel T.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; Earth Science Information Center, Open-File Reports Section [distributor], 1994

Simulation analysis of the ground-water flow system in the Portland Basin, Oregon and Washington

by Morgan, David S.
Published: U.S. Dept. of the Interior, U.S. Geological Survey ; For sale by the U.S. Geological Survey, Branch of Information Services, 1998

Ground-water data for the Portland basin, Oregon and Washington

by McCarthy, Kathleen A.
Published: Oregon Office, Chief, U.S. Geological Survey ; U.S. Geological Survey, Books and Open-file Reports Section [distributor], 1990