termination of the hydraulic gradient is a key component in
the Darcian equation for groundwater flow and determining
groundwater velocity, but we will save that exercise for
another article.
Parting Thoughts
Oftentimes in field work we come across problems we may
not have encountered recently, and having access to the right
tools can make the difference between success or failure. It is
my hope through this article and others like it I've helped in
some small way to provide you with useful tools—and these
Field Notes help you in your daily work.
References
Bates, Robert L., and Julia A. Jackson. 1984. Dictionary
of Geological Terms–Third Edition. New York:
Anchor Books.
Compton, Robert R. 1962. Manual of Field Geology.
New York: John Wiley & Sons Inc.
Heath, Ralph C. 1983. Basic Ground-Water Hydrology,
U.S. Geological Survey Water-Supply Paper 2220. Water-
Supply Paper, Reston, Virgina: U.S. Geological Survey.
WWJ
WWJ August 2016 29
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Raymond L. Straub Jr., PG, is the president of Straub Corp. in Stanton,
Texas, a Texas-registered geoscience firm and specialized
groundwater services firm. He is a Texas-licensed
professional geoscientist and holds master driller licenses
in Texas and New Mexico and a master pump installer
license in Texas. He can be reached at raymond@straub
corporation.com.
