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Marine Sciences Division

Gary Johnson

Gary Johnson

Marine Sciences Laboratory
Pacific Northwest National Laboratory
1529 West Sequim Bay Road
Sequim, Washington 98382

Biography

Mr. Johnson has over 25 years experience successfully managing research projects related to the environmental effects of hydroelectric energy production. Mr. Johnson was the technical manager for hydroacoustic monitoring and evaluation studies during the development of the surface flow bypass system at the Wells Dam from 1983 – 1992, which is arguably the most efficient smolt bypass in the Columbia basin. He served as manager of the Technical Services Division at BioSonics, Inc. before moving to the Bonneville Power Administration as a fisheries biologist. At BPA, Mr. Johnson worked to integrate needs for safe fish passage with the demand for hydroelectric generation. This led to Mr. Johnson being hired at PNNL to manage fish passage evaluations and bioengineering projects on the Snake River. He continued this type of work for BioAnalysts, Inc. before returning to PNNL to work on estuarine studies. Mr. Johnson currently manages projects related to research, monitoring, and evaluation in the lower Columbia River and estuary.

Research Interests

  • Environmental effects of hydropower
  • Bioengineering for fish protection at dams
  • Pacific Northwest estuarine and nearshore ocean ecology
  • Scientific Hydroacoustics
  • Design of research, monitoring and evaluation programs

Education and Credentials

  • 1981 M.S., Biological Oceanography, Oregon State University
  • 1976 B.A., Mathematics and Marine Biology, University of California at Berkeley

Affiliations and Professional Service

  • American Fisheries Society, member
  • AFS Bioengineering Chapter, member
  • Columbia Estuarine Research Conference, steering committee chair

Awards and Recognitions

  • 2011 Of The Year Award
  • 2010 Outstanding Performance Award for unparalleled levels of teamwork within various PNNL organizations - attention to detail and safety.
  • 1981 Outstanding graduate student publication, Oregon State University

PNNL Publications

2018

  • Ebberts B.D., B.D. Zelinsky, J.P. Karnezis, C. Studebaker, S. Lopez-Johnston, A.M. Creason, and L. Krasnow, et al. 2018. "Estuary Ecosystem Restoration: Implementing and Institutionalizing Adaptive Management." Restoration Ecology 26, no. 2:360-369. PNNL-SA-124329. doi:10.1111/rec.12562
  • Hou H., Z. Deng, J.J. Martinez, T. Fu, J.P. Duncan, G.E. Johnson, and J. Lu, et al. 2018. "A Hydropower Biological Evaluation Toolset (HBET) for Characterizing Hydraulic Conditions and Impacts of Hydro-Structures on Fish." Energies 11, no. 4:990. PNNL-SA-124812. doi:10.3390/en11040990

2016

  • Deng Z., T.J. Carlson, G.R. Ploskey, R.S. Brown, G.E. Johnson, and A.H. Colotelo. 2016. "Experimental and numerical modeling tools for conventional hydropower systems." In Alternative Energy and Shale Gas Encyclopedia, edited by JH Lehr, J Keeley and TB Kingery. 448-464. Hoboken, New Jersey:John Wiley & Sons, Inc. PNNL-SA-90973. doi:10.1002/9781119066354.ch44
  • Diefenderfer H.L., G.E. Johnson, R.M. Thom, K.E. Buenau, L.A. Weitkamp, C.M. Woodley, and A.B. Borde, et al. 2016. "Evidence-based Evaluation of the Cumulative Effects of Ecosystem Restoration." Ecosphere 7, no. 3:e01242. PNNL-SA-104585. doi:10.1002/ecs2.1242
  • Fu T., Z. Deng, J.P. Duncan, D. Zhou, T.J. Carlson, G.E. Johnson, and H. Hou. 2016. "Assessing Hydraulic Conditions through Francis turbines using an autonomous sensor device." Renewable Energy 99. PNNL-SA-113347. doi:10.1016/j.renene.2016.08.029

2015

  • Johnson G.E. 2015. Facilitation of the Estuary/Ocean Subgroup and the Expert Regional Technical Group, Annual Report for 2015. PNNL-24623. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., G.R. Ploskey, N.K. Sather, and D.J. Teel. 2015. "Residence Times of Juvenile Salmon and Steelhead in Off-Channel Tidal Freshwater Habitats, Columbia River, USA." Canadian Journal of Fisheries and Aquatic Sciences 72, no. 5:684-696. PNNL-SA-101024. doi:10.1139/cjfas-2014-0085

2014

  • Johnson G.E. 2014. Facilitation of the Estuary/Ocean Subgroup and the Expert Regional Technical Group, Fiscal Year 2014 Annual Report. PNNL-23603. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., N.K. Sather, J.R. Skalski, and D. Teel. 2014. "Application of Diversity Indices to Quantify Early Life-History Diversity for Chinook Salmon." Ecological Indicators 38. PNNL-SA-93739. doi:10.1016/j.ecolind.2013.11.005

2013

  • Coleman A.M., G.E. Johnson, A.B. Borde, H.L. Diefenderfer, N.K. Sather, T.E. Seiple, and J.A. Serkowski. 2013. The Oncor Geodatabase for the Columbia Estuary Ecosystem Restoration Program: Annual Report, 2012. PNNL-22405. Richland, WA: Pacific Northwest National Laboratory.
  • Hughes J.S., G.E. Johnson, G.R. Ploskey, M.J. Hennen, E.S. Fischer, and S.A. Zimmerman. 2013. Optimization of Hydroacoustic Equipment Deployment at Foster Dam, 2013. PNNL-22359. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., and N.K. Sather. 2013. Facilitation of the Estuary/Ocean Subgroup and the Expert Regional Technical Group, Fiscal Year 2013 Annual Report. PNNL-22757. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., F. Khan, J.R. Skalski, and B.A. Klatte. 2013. "Sluiceway Operations to Pass Juvenile Salmonids at The Dalles Dam, Columbia River, USA." North American Journal of Fisheries Management 33, no. 5:1000-1012. PNNL-SA-87100. doi:10.1080/02755947.2013.822441
  • Johnson G.E., N.K. Sather, A. Storch, J. Johnson, J.R. Skalski, D.J. Teel, and T. Brewer, et al. 2013. Multi-Scale Action Effectiveness Research in the Lower Columbia River and Estuary, 2012. PNNL-22481. Richland, WA: Pacific Northwest National Laboratory.
  • Khan F., I.M. Royer, G.E. Johnson, and S.C. Tackley. 2013. "Sluiceway Operations for Adult Steelhead Downstream Passage at The Dalles Dam, Columbia River, USA." North American Journal of Fisheries Management 33, no. 5:1013-1023. PNNL-SA-87099. doi:10.1080/02755947.2013.793629
  • Ploskey G.R., G. Batten, A.W. Cushing, J.A. Kim, G.E. Johnson, J.R. Skalski, and R.L. Townsend, et al. 2013. Survival and Passage of Juvenile Chinook Salmon and Steelhead Passing through Bonneville Dam, 2011. PNNL-22178 Final. Richland, WA: Pacific Northwest National Laboratory.
  • Sather N.K., A.B. Borde, H.L. Diefenderfer, J.A. Serkowski, A.M. Coleman, and G.E. Johnson. 2013. The Oncor Geodatabase for the Columbia Estuary Ecosystem Restoration Program: Handbook of Data Reduction Procedures, Workbooks, and Exchange Templates. PNNL-22922. Richland, WA: Pacific Northwest National Laboratory.
  • Skalski J.R., R.L. Townsend, A. Seaburg, G.R. Ploskey, M.A. Weiland, J.S. Hughes, and C.M. Woodley, et al. 2013. Compliance Monitoring of Subyearling Chinook Salmon Survival and Passage at The Dalles Dam, Summer 2012. PNNL-22195. Richland, WA: Pacific Northwest National Laboratory.
  • Weiland M.A., C.M. Woodley, G.R. Ploskey, J.S. Hughes, J.A. Kim, Z. Deng, and T. Fu, et al. 2013. Acoustic Telemetry Evaluation of Juvenile Salmonid Passage and Survival at John Day Dam, 2010. PNNL-22177. Richland, WA: Pacific Northwest National Laboratory.
  • Weiland M.A., C.M. Woodley, G.R. Ploskey, J.S. Hughes, M.J. Hennen, J.A. Kim, and Z. Deng, et al. 2013. Acoustic Telemetry Evaluation of Juvenile Salmonid Passage and Survival at John Day Dam, 2011. PNNL-22266. Richland, WA: Pacific Northwest National Laboratory.

2012

  • Diefenderfer H.L., G.E. Johnson, J.R. Skalski, S.A. Breithaupt, and A.M. Coleman. 2012. "Application of the Diminishing Returns Concept in the Hydroecologic Restoration of Riverscapes." Landscape Ecology 27, no. 5:671-682. PNNL-SA-66973. doi:10.1007/s10980-012-9713-8
  • Harnish R.A., G.E. Johnson, G.A. McMichael, M.S. Hughes, and B.D. Ebberts. 2012. "Effect of Migration Pathway on Travel Time and Survival of Acoustic-Tagged Juvenile Salmonids in the Columbia River Estuary." Transactions of the American Fisheries Society 141, no. 2:507-519. PNNL-SA-70629. doi:10.1080/00028487.2012.670576
  • Johnson G.E., and W.S. Rainey. 2012. "Eco-Design of River Fishways for Upstream Passage: Application for Hanfeng Dam, Pengxi River, China." Journal of Chongqing Normal University - Natural Science Edition 29, no. 3:104-113. PNNL-SA-85479.
  • Johnson G.E., H.L. Diefenderfer, R.M. Thom, G.C. Roegner, B.D. Ebberts, J.R. Skalski, and A.B. Borde, et al. 2012. Evaluation of Cumulative Ecosystem Response to Restoration Projects in the Lower Columbia River and Estuary, 2010. PNNL-20296. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., M.J. Hennen, S.A. Zimmerman, G. Batten, S.M. Carpenter, Z. Deng, and T. Fu, et al. 2012. Survival and Passage of Yearling Chinook Salmon and Steelhead at The Dalles Dam, Spring 2011 - FINAL REPORT. PNNL-21826. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., W.H. Pearson, S.L. Southard, and R.P. Mueller. 2012. "Upstream Movement of Juvenile Coho Salmon in Relation to Environmental Conditions in a Culvert Test Bed." Transactions of the American Fisheries Society 141, no. 6:1520-1531. PNWD-SA-8455. doi:10.1080/00028487.2012.699013
  • Khan F., G.E. Johnson, I.M. Royer, J.S. Hughes, E.S. Fischer, D.M. Trott, and G.R. Ploskey. 2012. Hydroacoustic Evaluation of Juvenile Salmonid Passage and Distribution at Lookout Point Dam, 2010. PNNL-20362 FINAL. Richland, WA: Pacific Northwest National Laboratory.
  • Khan F., G.E. Johnson, I.M. Royer, N.R. Phillips, J.S. Hughes, E.S. Fischer, and K.D. Ham, et al. 2012. Acoustic Imaging Evaluation of Juvenile Salmonid Behavior in the Immediate Forebay of the Water Temperature Control Tower at Cougar Dam, 2010. PNNL-20625 FINAL. Richland, WA: Pacific Northwest National Laboratory.
  • Khan F., I.M. Royer, G.E. Johnson, and K.D. Ham. 2012. Hydroacoustic Evaluation of Juvenile Salmonid Passage and Distribution at Detroit Dam, 2011. PNNL-21577 FINAL. Richland, WA: Pacific Northwest National Laboratory.
  • Sather N.K., A. Storch, G.E. Johnson, D.J. Teel, J.R. Skalski, A.J. Bryson, and R.M. Kaufmann, et al. 2012. Multi-Scale Action Effectiveness Research in the Lower Columbia River and Estuary, 2011 - FINAL ANNUAL REPORT. PNNL-21194 FINAL. Richland, WA: Pacific Northwest National Laboratory.
  • Skalski J.R., R.L. Townsend, A. Seaburg, G.E. Johnson, G.R. Ploskey, and T.J. Carlson. 2012. Compliance Monitoring of Juvenile Yearling Chinook Salmon and Steelhead Survival and Passage at The Dales Dam, Spring 2011. PNNL-21124. Richland, WA: Pacific Northwest National Laboratory.
  • Skalski J.R., R.L. Townsend, A. Seaburg, G.E. Johnson, G.R. Ploskey, and T.J. Carlson. 2012. Compliance Monitoring of Juvenile Yearling Chinook Salmon and Steelhead Survival and Passage at The Dalles Dam, Spring 2011. PNNL-21124 Rev 1. Richland, WA: Pacific Northwest National Laboratory.

2011

  • Carlson T.J., G.E. Johnson, C.M. Woodley, J.R. Skalski, and A. Seaburg. 2011. Compliance Monitoring of Underwater Blasting for Rock Removal at Warrior Point, Columbia River Channel Improvement Project, 2009/2010. PNNL-20388. Richland, WA: Pacific Northwest National Laboratory.
  • Diefenderfer H.L., G.E. Johnson, N.K. Sather, J.R. Skalski, E.M. Dawley, A.M. Coleman, and K.G. Ostrand, et al. 2011. Evaluation of Life History Diversity, Habitat Connectivity, and Survival Benefits Associated with Habitat Restoration Actions in the Lower Columbia River and Estuary, Annual Report 2010. PNNL-20295 Final. Richland, WA: Pacific Northwest National Laboratory.
  • Diefenderfer H.L., R.M. Thom, G.E. Johnson, J.R. Skalski, K.A. Vogt, B.D. Ebberts, and G.C. Roegner, et al. 2011. "A Levels-of-Evidence Approach for Assessing Cumulative Ecosystem Response to Estuary and River Restoration Programs." Ecological Restoration 29, no. 1-2:111-132. PNNL-SA-55734.
  • Johnson G.E., A. Storch, J.R. Skalski, A.J. Bryson, C. Mallette, A.B. Borde, and E. Van Dyke, et al. 2011. Ecology of Juvenile Salmon in Shallow Tidal Freshwater Habitats of the Lower Columbia River, 2007-2010. PNNL-20083. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., J.R. Skalski, T.J. Carlson, G.R. Ploskey, M.A. Weiland, Z. Deng, and E.S. Fischer, et al. 2011. Survival and Passage of Yearling and Subyearling Chinook Salmon and Steelhead at The Dalles Dam, 2010. PNNL-20626. Richland, WA: Pacific Northwest National Laboratory.
  • Thom R.M., H.L. Diefenderfer, J.E. Adkins, C. Judd, M.G. Anderson, K.E. Buenau, and A.B. Borde, et al. 2011. "Guidelines, processes and tools for coastal ecosystem restoration, with examples from the United States." Plankton & Benthos Research 5, no. Supplement:185-201. PNNL-SA-73076. doi:10.3800/pbr.5.185
  • Weiland M.A., G.R. Ploskey, J.S. Hughes, Z. Deng, T. Fu, J.A. Kim, and G.E. Johnson, et al. 2011. Acoustic Telemetry Evaluation of Juvenile Salmonid Passage and Survival Proportions at John Day Dam, 2009. PNNL-20766. Richland, WA: Pacific Northwest National Laboratory.

2010

  • Carlson T.J., and G.E. Johnson. 2010. Columbia River Channel Improvement Project Rock Removal Blasting: Monitoring Plan. PNNL-19076. Richland, WA: Pacific Northwest National Laboratory.
  • Deng Z., R.P. Mueller, M.C. Richmond, and G.E. Johnson. 2010. "Injury and mortality of juvenile salmon entrained in a submerged jet entering still water." North American Journal of Fisheries Management 30, no. 3:623-628. PNNL-SA-63135.
  • Diefenderfer H.L., G.E. Johnson, N.K. Sather, J.R. Skalski, E.M. Dawley, and A.M. Coleman. 2010. Evaluation of Life History Diversity, Habitat Connectivity, and Survival Benefits Associated with Habitat Restoration Actions in the Lower Columbia River and Estuary, Annual Report 2009. PNNL-19410. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E. 2010. Facilitation of the Estuary/Ocean Subgroup for Federal Research, Monitoring, and Evaluation, FY10 Annual Report. PNNL-19940. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., F. Khan, G.R. Ploskey, J.S. Hughes, and E.S. Fischer. 2010. Optimization of Hydroacoustic Equipment Deployments at Lookout Point and Cougar Dams, Willamette Valley Project, 2010. PNNL-19293. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., H.L. Diefenderfer, A.B. Borde, A.J. Bryson, A. Cameron, A.M. Coleman, and C. Corbett, et al. 2010. Evaluating Cumulative Ecosystem Response to Restoration Projects in the Lower Columbia River and Estuary, 2009. PNNL-19440. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., T.J. Carlson, and J.R. Skalski. 2010. Compliance Monitoring of Juvenile Subyearling Chinook Salmon Survival and Passage at The Dalles Dam, Summer 2010. PNNL-20042. Richland, WA: Pacific Northwest National Laboratory.
  • Khan F., G.E. Johnson, and M.A. Weiland. 2010. Hydroacoustic Evaluation of Overwintering Summer Steelhead Fallback and Kelt Passage at The Dalles Dam, 2009-2010. PNNL-19615. Richland, WA: Pacific Northwest National Laboratory.

2009

  • Johnson G.E. 2009. Facilitation of the Estuary/Ocean Subgroup for Federal Research, Monitoring, and Evaluation, FY09 Annual Report. PNNL-18907. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., H.L. Diefenderfer, A.B. Borde, E.M. Dawley, B.D. Ebberts, G.C. Roegner, and M.T. Russell, et al. 2009. Evaluating Cumulative Ecosystem Response to Restoration Projects in the Lower Columbia River and Estuary, 2008. PNNL-18677. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., M.C. Richmond, J.B. Hedgepeth, G.R. Ploskey, M.G. Anderson, Z. Deng, and F. Khan, et al. 2009. Smolt Responses to Hydrodynamic Conditions in Forebay Flow Nets of Surface Flow Outlets, 2007. PNNL-17387. Richland, WA: Pacific Northwest National Laboratory.
  • Khan F., G.E. Johnson, and M.A. Weiland. 2009. Hydroacoustic Evaluation of Overwintering Summer Steelhead Fallback and Kelt Passage at The Dalles Dam 2008-2009. PNNL-18590. Richland, WA: Pacific Northwest National Laboratory.
  • Ploskey G.R., M.A. Weiland, D.M. Faber, Z. Deng, G.E. Johnson, J.S. Hughes, and S.A. Zimmerman, et al. 2009. Survival Rates of Juvenile Salmonids Passing Through the Bonneville Dam and Spillway in 2008. PNNL-18748. Richland, WA: Pacific Northwest National Laboratory.
  • Sather N.K., G.E. Johnson, A. Storch, D. Teel, J.R. Skalski, T.A. Jones, and E.M. Dawley, et al. 2009. Ecology of Juvenile Salmon in Shallow Tidal Freshwater Habitats in the Vicinity of the Sandy River Delta, Lower Columbia River, 2008. PNNL-18450. Richland, WA: Pacific Northwest National Laboratory.
  • Weiland M.A., G.R. Ploskey, J.S. Hughes, Z. Deng, T. Fu, T.J. Monter, and G.E. Johnson, et al. 2009. Acoustic Telemetry Evaluation of Juvenile Salmonid Passage and Survival at John Day Dam with Emphasis on the Prototype Surface Flow Outlet, 2008. PNNL-18890. Richland, WA: Pacific Northwest National Laboratory.
  • Weiland M.A., J. Kim, W.T. Nagy, and G.E. Johnson. 2009. Evaluation of Steelhead Kelt Passage into the Bonneville Dam Second Powerhouse Corner Collector Prior to the Juvenile Migration Seasons, 2007 and 2008. PNNL-18323. Richland, WA: Pacific Northwest National Laboratory.

2008

  • Johnson G.E., and G.B. Sutherland. 2008. Proceedings of the Columbia River Estuary Conference on Ecosystem Restoration. Richland, Washington:Battelle Press. PNNL-SA-61338.
  • Johnson G.E., and H.L. Diefenderfer. 2008. Facilitation of the Estuary/Ocean Subgroup for Federal Research, Monitoring, and Evaluation, FY08 Annual Report. PNNL-17811. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., B. Ebberts, A.E. Giorgi, K. Kuhn, R. Lee, J.H. Plump, and D.A. Stensby, et al. 2008. "Outfall Site and Type Selection for a New Surface Flow Outlet to Pass Juvenile Fish at Bonneville Dam's Second Powerhouse, Columbia River." In Proceedings of the 4th American Fisheries Society Symposium: Fisheries Bioengineering, edited by SV Amaral, D Mathur, EP Taft, 203-216. Bethesda, Maryland:American Fisheries Society. PNNL-SA-42302.
  • Johnson G.E., B.D. Ebberts, A.E. Giorgi, K. Kuhn, R.T. Lee, J.H. Plump, and D.A. Stensby, et al. 2008. "Outfall Site and Type Selection for a New Surface Flow Outlet to Pass Juvenile Salmonids at Bonneville Dam's Second Powerhouse, Columbia River." In Advances in Fisheries Bioengineering: 4th Fisheries Bioengineering Symposium, Bethesda, Maryland, edited by SV Amaral, D Mathur, EP Taft, 203-216. Bethesda, Maryland:American Fisheries Society. PNNL-SA-53930.
  • Johnson G.E., G.R. Ploskey, J. Hedgepeth, F. Khan, R.P. Mueller, W.T. Nagy, and M.C. Richmond, et al. 2008. "Reducing the Impacts of Hydroelectric Dams on Juvenile Anadromous Fishes: Bioengineering Evaluations Using Acoustic Imaging in the Columbia River, USA." In Dams: Impacts, Stability and Design, edited by WP Hayes & MC Barnes. 1-48. Hauppauge, New York:Nova Science Publishers. PNNL-SA-61525.
  • Johnson G.E., H.L. Diefenderfer, A.B. Borde, E.M. Dawley, B.D. Ebberts, D.A. Putman, and G.C. Roegner, et al. 2008. Evaluating Cumulative Ecosystem Response to Restoration Projects in the Columbia River Estuary, Annual Report 2007. PNNL-17437. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., H.L. Diefenderfer, B.D. Ebberts, C. Tortorici, T. Yerxa, J. Leary, and J.R. Skalski. 2008. Research, Monitoring, and Evaluation for the Federal Columbia River Estuary Program. PNNL-17300. Richland, WA: Pacific Northwest National Laboratory.
  • Ploskey G.R., J.S. Hughes, F. Khan, J. Kim, B.L. Lamarche, G.E. Johnson, and E.Y. Choi, et al. 2008. Optimization of Concurrent Deployments of the Juvenile Salmon Acoustic Telemetry System and Other Hydroacoustic Equipment at John Day Dam. PNNL-17837. Richland, WA: Pacific Northwest National Laboratory.
  • Roegner G.C., H.L. Diefenderfer, A.B. Borde, R.M. Thom, E.M. Dawley, A.H. Whiting, and S.A. Zimmerman, et al. 2008. Protocols for Monitoring Habitat Restoration Projects in the Lower Columbia River and Estuary. PNNL-15793. Richland, WA: Pacific Northwest National Laboratory.
  • Sobocinski K.L., G.E. Johnson, N.K. Sather, A. Storch, T.A. Jones, C. Mallette, and E.M. Dawley, et al. 2008. Ecology of Juvenile Salmonids in Shallow Tidal Freshwater Habitats in the Vicinity of the Sandy River Delta, Lower Columbia River, 2007. PNNL-17395. Richland, WA: Pacific Northwest National Laboratory.

2007

  • Duberstein C.A., K.D. Ham, D.D. Dauble, and G.E. Johnson. 2007. The Independent Technical Analysis Process. PNNL-16507. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., A.B. Borde, E. Dawley, H.L. Diefenderfer, B.D. Ebberts, D.A. Putman, and G.C. Roegner, et al. 2007. Evaluating Cumulative Ecosystem Response to Restoration Projects in the Columbia River Estuary, Annual Report 2006. PNNL-16561. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., and H.L. Diefenderfer. 2007. Facilitation of the Estuary/Ocean Subgroup for Research, Monitoring, and Evaluation, FY07 Annual Report. PNNL-16947. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., F. Khan, J.R. Skalski, C.L. Rakowski, M.C. Richmond, and J.A. Serkowski. 2007. Hydroacoustic Evaluation of Juvenile Salmonid Passage at The Dalles Dam Spillway, 2006. PNNL-16458. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., J.W. Beeman, I. Duran, and A. Puls. 2007. Synthesis of Juvenile Salmonid Passage Studies at The Dalles Dam, Volume II, 2001-05. PNNL-16443. Richland, WA: Pacific Northwest National Laboratory.

2006

  • Diefenderfer H.L., R.M. Thom, A.B. Borde, G.C. Roegner, A.H. Whiting, G.E. Johnson, and E. Dawley, et al. 2006. Evaluating Cumulative Ecosystem Response to Restoration Projects in the Columbia River Estuary, Annual Report 2005. PNNL-15934. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E. 2006. Facilitation of the Estuary/Ocean Subgroup for Research, Monitoring, and Evaluation, FY06 Annual Report. PNNL-16142. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., and D.D. Dauble. 2006. "Surface Flow Outlets to Protect Juvenile Salmonids Passing through Hydropower Dams." Reviews in Fisheries Science 14, no. 3:213-244. PNNL-SA-50342.
  • Johnson G.E., F. Khan, J. Hedgepeth, R.P. Mueller, C.L. Rakowski, M.C. Richmond, and J.A. Serkowski, et al. 2006. Hydroacoustic Evaluation of Juvenile Salmonid Passage at The Dalles Dam Sluiceway, 2005. PNNL-15540. Richland, WA: Pacific Northwest National Laboratory.
  • Pearson W.H., J.R. Skalski, K.L. Sobocinski, M.C. Miller, G.E. Johnson, G.D. Williams, and J.A. Southard, et al. 2006. A Study of Stranding of Juvenile Salmon by Ship Wakes Along the Lower Columbia River Using a Before-and-After Design: Before-Phase Results. PNNL-15400. Richland, WA: Pacific Northwest National Laboratory.
  • Ploskey G.R., G.E. Johnson, M.A. Weiland, F. Khan, R.P. Mueller, J.A. Serkowski, and C.L. Rakowski, et al. 2006. "Acoustic Camera Evaluation of Juvenile Salmonid Approach and Fate at Surface Flow Outlets of Two Hydropower Dams." In HydroVision 2006, 13 pages. Kansas City, Missouri:HCI Publications. PNNL-SA-48572.

2005

  • Diefenderfer H.L., C. Roegner, R.M. Thom, E.M. Dawley, A.H. Whiting, G.E. Johnson, and K.L. Sobocinski, et al. 2005. Evaluating Cumulative Ecosystem Response to Restoration Projects in the Columbia River Estuary, Annual Report 2004. PNNL-15102. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., M.E. Hanks, F. Khan, C.B. Cook, J. Hedgepeth, R.P. Mueller, and C.L. Rakowski, et al. 2005. Hydroacoustic Evaluation of Juvenile Salmonid Passage at The Dalles Dam in 2004. PNNL-15180. Richland, WA: Pacific Northwest National Laboratory.
  • Johnson G.E., S.M. Anglea, N.S. Adams, and T.O. Wik. 2005. "Evaluation of a prototype surface flow bypass for juvenile salmon and steelhead at the powerhouse of Lower Granite Dam, Snake River, Washington, 1996-2000." Fisheries 25, no. 1:138-151. PNWD-SA-5764.
  • Johnson G.E., S.M. Anglea, N.S. Adams, and T.O. Wik. 2005. "Evaluation of a Prototype Surface Flow Bypass for Juvenile Salmon and Steelhead at the Powerhouse of Lower Granite Dam, Snake River, Washington, 1996-2000." North American Journal of Fisheries Management 25, no. 1:138-151. PNNL-SA-39906. doi:10.1577/M04-024.1
  • Ploskey G.R., G.E. Johnson, A.E. Giorgi, R.L. Johnson, J.R. Stevenson, C.R. Schilt, and P.N. Johnson, et al. 2005. Synthesis of Biological Reports on Juvenile Fish Passage and Survival at Bonneville Dam through 2005. PNNL-15041. Richland, WA: Pacific Northwest National Laboratory.
  • Rakowski C.L., M.C. Richmond, J.A. Serkowski, and G.E. Johnson. 2005. Forebay Computational Fluid Dynamics Modeling for The Dalles Dam to Support Behavior Guidance System Siting Studies. PNNL-15689. Richland, WA: Pacific Northwest National Laboratory.

2004

  • Johnson G.E., J. Hedgepeth, J.R. Skalski, and A.E. Giorgi. 2004. "A Markov Chain Analysis of Fish Movements to Determine Entrainment Zones." Fisheries Research 69, no. 3:349-358. PNWD-SA-6170.
  • Johnson G.E., J. Hedgepeth, J.R. Skalski, and A.E. Giorgi. 2004. "A Markov chain analysis of fish movements to determine entrainment zones." Fisheries Research 69, no. 3:349-358. PNNL-SA-36658.

2003

  • Johnson G.E., R.M. Thom, A.H. Whiting, G.B. Sutherland, T.J. Berquam, B. Ebberts, and N.M. Ricci, et al. 2003. An Ecosystem-Based Restoration Plan with Emphasis on Salmonid Habitats in the Lower Columbia River and Estuary. PNNL-14412. Richland, WA: Pacific Northwest National Laboratory.

2002

  • Hedgepeth J., G.E. Johnson, J.R. Skalski, and J. Burczynski. 2002. "Active Fish Tracking Sonar (AFTS) for Assessing Fish Behaviour." In European Conference on Underwater Acoustics, published in "Acta Acustica United with Acustica", 88, 739-742. Stuttgart:S. Hirzel Verlag. PNWD-SA-5739.

2001

  • Adams N., G.E. Johnson, D.W. Rondorf, S.M. Anglea, and T.O. Wik. 2001. "Biological Evaluation of the Behavioral Guidance Structure at Lower Granite Dam on the Snake River, Washington in 1998." In Behavioral Technologies for Fish Guidance, American Fisheries Society Symposium, 26, 145-160. Bethesda, Maryland:American Fisheries Society. PNWD-SA-5614.

2000

  • Johnson G.E., N.S. Adams, R.L. Johnson, D.W. Rondorf, D.D. Dauble, and T.Y. Barila. 2000. "Evaluation of the Prototype Surface Bypass for Salmonid Smolts in Spring 1996 and 1997 at Lower Granite Dam on the Snake River, Washington." Transactions of the American Fisheries Society 129, no. 2:381-397. PNWD-SA-5610.
  • Johnson R.L., and G.E. Johnson. 2000. "Fish Behavior Relative to a Prototype Surface Bypass and Collector (SBC) at Lower Granite Dam Using Innovative Hydroacoustic Techniques." In Advances in Fish Passage Technology, edited by Mufeed Odeh, 57-67. Bethesda, Maryland:American Fisheries Society. PNWD-SA-4665.

1998

  • Johnson R.L., D.S. Daly, and G.E. Johnson. 1998. "Combining Hydroacoustics, Flow Models to Study Fish Behavior." Hydro Review XVII, no. 7:40-56. PNWD-SA-4485.

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