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DYE TRACING

"The definitive tool for determining groundwater flow."

Groundwater Tracer Investigations

Since the first dye trace was performed in 1877 to trace the sinking portions of the upper Danube river, fluorescent dyes have remained the best and most used tools for determining groundwater flow. Very low toxicity and extremely low detection limits combine to make fluorescent dye tracing a standard tool for development of a site hydrogeologic model, particularly in the area of risk assessment.

QA/QC - A Top Priority

The methods that Crawford Hydrology Laboratory have developed are the result of 22 years of scientific research and practical field experience. As dye tracing has grown into a high-tech science, our methods have set new standards. Regulators from 8 states, the US EPA and the USGS, as well as consultants from many Environmental Consulting Firms, have our field and laboratory procedures on-file for use as reference when working in areas of carbonate bedrock.
A small waterfall flowing
over a carpet of moss
is turned red by 
Rhodamine WT dye.
 

Tracer Test Design

Crawford Hydrology Laboratory provides levels of involvement ranging from complete investigations to laboratory services only.

Training

On-site assistance and training can be provided allowing you to utilize your own employees to whatever extent you desire.

Tracing Supplies and Equipment
The Lost River flowing red
with Rhodamine WT dye.
 

Supplies and equipment necessary for high quality dye tracing including dyes, dye receptors, automatic water samplers, dye injection pumps, pressure tranducers and other spring and well monitoring equipment are all available at very reasonable prices.

Over 900 dye traces have been performed by Crawford and Personnel.

For more detailed information on karst related issues, don't forget to visit:

Crawford Hydrology Laboratory
Center for Cave and Karst Studies
Department of Geography and Geology
1 Big Red Way / EST 403
Bowling Green, KY 42101
(270) 745-9224