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Welcome to CHL

Crawford Hydrology Laboratory provides professional consulting and field and laboratory services regarding groundwater tracing in karst and non-karst areas.

We specialize in groundwater investigations with the use of fluorescent dyes and utilize techniques we have developed and enhanced over the past 38 years. We provide quality supplies and analyses for groundwater traces and conduct full field investigations. Crawford Hydrology Laboratory has extensive experience conducting dye trace investigations for commercial clients as well as government agencies.

COVID-19 Policy

Notice: Current analysis turn-around time is 7-10 business days. 

As a research center within Western Kentucky University, CHL will adhere to the official university policy during the COVID-19 outbreak. Please visit https://www.wku.edu/covid19/ for more information.

CHL Holiday Schedule

CHL will follow the WKU extended holiday schedule this year in an effort to decrease the spread of COVID-19.   

Please be advised of the following dates during which CHL will be closed:

Thanksgiving Holiday – November 23-27, 2020      

Winter Holiday – December 21, 2020 – January 1, 2021     

We will not be offering expedited analysis or overnight supply shipments during these times, however, the University will be accepting shipments throughout the holiday break. Samples received after December 21 may not be officially checked in until January 4, pending arrival time during those two weeks. If you anticipate needing supplies or if you have any other concerns pertaining to the lab schedule, please contact us prior to December 21 so we can plan to accommodate your needs during the holiday break. 

We wish everyone a safe and happy holiday season and look forward to continuing to serve you in 2021!

Student Research Grants

Now accepting applications for 2021 student research grants in support of dye-tracing projects. 

IYCK 2021

2021 has been designated the International Year of Caves and Karst. Special events in celebration of IYCK will be held locally and abroad. Join in!


Unique research partnership evaluates challenges to water resources among Amish and Mennonite communities in southcentral Kentucky.

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