Dr. Lawrence J. Gray

                       Professor of Biology, Utah Valley University              

              Certified Senior Ecologist, ESA              


Research Interest:  Freshwater Ecology with an emphasis on macroinvertebrates

Current Research Projects

In collaboration with the Utah Division of Water Quality:

  Water quality monitoring as part of TMDL assessments in the Spanish Fork River   (Utah County; since 2003) and the Weber River basin (Summit County; since 2004). 

  Impact assessment of a new sewage treatment plant below Jordanelle Reservoir on the Provo River (Wasatch County; since 2008).


I am also part of the research group evaluating water quality in the freshwater wetlands surrounding the Great Salt Lake.  Information on that research, including my work on macroinvertebrates, can be found at the UDWQ wetlands website


I also conduct field studies of macroinvertebrates for the Uinta-Wasatch-Cache National Forest and various local water districts for ongoing water quality monitoring and federal 303(d) permitting.


This page has photographs of various stream reaches in the Spanish Fork River basin.

This page has photographs of various tributaries sampling in the Weber River basin.

This page has photographs of sampling sites in the Great Salt Lake.

This page has descriptions of my previous stream research in Utah, Colorado, Arizona, Kansas.


List of Publications



Contact Information: 


e-mail:  grayla@uvu.edu

Voice:  (801) 863-8558



Department of Biology

Utah Valley University

800 W. University Parkway

Orem, UT 84058


Updated 26 April 2010.