User's guide for MODTOOLS : computer programs for translating data of MODFLOW and MODPATH into geographic information system files /

by Orzol, L. L.
Published 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 1992

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

by Orzol, L. L.
Published 1999

Ground-water and water-chemistry data for the Willamette Basin, Oregon /

by Orzol, L. L.
Published 2000

Flood hazards along the Toutle and Cowlitz rivers, Washington, from a hypothetical failure of Castle Lake blockage /

by Laenen, Antonius, Orzol, L. L.
Published 1987

Flood hazards along the Toutle and Cowlitz rivers, Washington, from a hypothetical failure of Castle Lake blockage /

by Laenen, Antonius
Published 1987

Ground-water and water-chemistry data for the Willamette Basin, Oregon /

Published 2000

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

by Snyder, Daniel T.
Published 1996

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

by Snyder, Daniel T.
Published 1998