Staff - Mark Timko

Mark Timko is a Senior Fishery Biologist with over 20 years of experience in fisheries science. Mr. Timko is the Principal Investigator and owner of Blue Leaf Environmental and has been responsible for designing and conducting large-scale multi-year biotelemetry studies to assess migration, timing, distribution and survival as it relates to hydroelectric project operations, structure, and environmental conditions. 

Mr. Timko excels in acoustic telemetry techniques, including large-scale presence/absence mark-recapture studies and fine-scale three-dimensional movement and analysis. He has conducted fisheries evaluations at hydropower dams worldwide from the United States to New Caledonia, La Reunion Island (France), Australia, Puerto Rico, Denmark, and the United Kingdom.

Being current on emerging technologies and selecting the best technology to conduct a successful study is one of Mr. Timko's greatest attributes; he is proficient in the use and up-to-date advances of radio, PIT and acoustic telemetry systems. Mr. Timko has managed and participated in all aspects of conducting research and monitoring projects including study design, implementation, analysis, reporting, and personnel administration.  

He was an active participant of the Priest Rapids Bypass Design Team where he collaborated with engineers and biologists on behalf of Grant PUD to design a top-spill passage alternative at Priest Rapids Dam, with a completion date of Spring, 2014. Mr. Timko is also a member of the Columbia Basin JSATS User Group. He completed an MS in Fisheries from the University of Alaska in 1998 and a BS in Marine Sciences from Hawaii Pacific University in 1992.