U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings
of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993,
Water-Resources Investigations Report 94-4015
Tracer Injections in Small Streams--Why and How We Do Them
by
Gary W. Zellweger (U.S. Geological Survey, Menlo Park, Calif.)
Abstract
By using simple techniques and imagination, researchers can use conservative-tracer
injections to collect hydrologic data on small streams. Stream hydrologic
properties such as discharge, which cannot be measured in small streams
by other means, are measurable with a precision as good as two percent
by use of conservative tracers.
This paper briefly describes some of the hydrologic information that
can be gained from continuous injection experiments and describes tracer
selection criteria, injection equipment, and sampling and tracer analysis.
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