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Energy and Environment Directorate

Kenneth Ham

Kenneth Ham

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352
(509) 371-7156


Dr. Ham is a senior research scientist. He provides decision support related to the operation and configuration of the Columbia and Snake River hydrosystem to optimize juvenile salmonid survival, costs, and power production. Dr. Ham's research projects include assessing the risk of multiple turbine passage on survival of emigrating juvenile salmonids, directing the development of software to process and display acoustic tag data within a GIS map, and developing software to estimate fish passage from fixed-location hydroacoustics at Columbia River Basin hydropower projects operated by the Corps of Engineers. His research has evaluated the sensitivity of hydroacoustic fish passage estimates to errors in detectability model inputs and developed a model of the risk of stranding for chinook salmon smolt in the Hanford Reach of the Columbia River. Dr. Ham directs the development of software tools to process and analyze tagged fish movements. These tools are used to evaluate fish passage at dams and measure other risks to anadromous fishes.

Research Interests

  • Fish passage at large hydroelectric facilities
  • Physiological ecology of fishes
  • Multivariate analysis of environmental data
  • Automated data acquisition and control of experiments in laboratory and field situations
  • Data management, statistical analysis and programming

Education and Credentials

  • Ph.D., Ecology, University of Tennessee, Knoxville. 1994
  • M.S., Wildlife and Fisheries Sciences, Texas A&M University, College Station, 1989
  • B.S., Wildlife and Fisheries Sciences (Minor: Zoology), Magna Cum Laude, University of Tennessee, Knoxville, 1986

PNNL Publications


  • Matzner S, AR Maxwell, KD Ham, RD Hytnen, and J Horne. 2016. "Observing Ocean Ecosystems with Sonar." In MTS/IEEE Oceans 2016, September 19-23, 2016, Monterey, California.  IEEE, PISCATAWAY, NJ.  doi:10.1109/OCEANS.2016.7761014
  • Skalski JR, MA Weiland, KD Ham, GR Ploskey, GA Mcmichael, AHA Colotelo, TJ Carlson, CM Woodley, MB Eppard, and EE Hockersmith. 2016. "Status After 5 Years of Survival Compliance Testing in the Federal Columbia River Power System (FCRPS)." North American Journal of Fisheries Management 36(4):720-730.  doi:10.1080/02755947.2016.1165775









  • Moursund RA, DD Dauble, and M Langeslay. 2003. "Turbin Intake Diversion Screens: Investigating Effects on Pacific Lamprey." Hydro Review XXII(1):40-46. 


  • Ham KD, and TN Pearsons. 2001. "A Practical Approach for Containing Ecological Risks Associated with Fish Stocking Programs." Fisheries 26(4):15-23. 

Energy and Environment

Core Research Areas