Cooperative Fish and Wildlife Research Units Program: Maine
Education, Research and Technical Assistance for Managing Our Natural Resources

Maine Project


Passage of adult Atlantic salmon in the Penobscot River before and after dam removal

January 2005 - January 2022


Personnel

Participating Agencies

  • NOAA FISHERIES
  • NOAA Fisheries
  • West Enfield Fund
  • NOAA
  • CRU
  • ARRA
  • SSP Program
Adult Atlantic salmon tagging

The Penobscot River has experienced two main-stem dam removals and other engineering changes, including the installation of a fish lift at Milford Dam (the lowest dam in the system) with hopes of restoring Atlantic salmon. Efforts to restore these federally endangered fish will rely on safe and effective fish passage. We sought to use acoustic, radio telemetry and PIT tag technology are being used to characterize migration patterns and passage efficiency of adult Atlantic salmon. This work in the Penobscot River, Maine, necessitating effective collaboration with USFWS, NOAA, Penobsot Nation, Maine Department of Marine Resources, Brookfield Power, TNC and the Penobscot River Restoration Trust. Characterizing migration patterns and passage efficiency in the Penobscot River, Maine can inform restoration strategies into the future.

Research Publications Publication Date
Gorsky, D., J. Trial, J. Zydlewski, J. McCleave (2009) The Effects of Smolt Stocking Strategies on Migratory Path Selection of Adult Atlantic Salmon in the Penobscot River, Maine. North American Journal of Fisheries Management 29:949-957. | Download 2009-06-30
Holbrook, C., J. Zydlewski, M. Kinnison, Gorsky, D., and S. Shephard (2009) Movements of pre-spawn adult Atlantic salmon near hydroelectric dams in the lower Penobscot River, Maine. North American Journal of Fisheries Management. 2009-04-30
Sigourney, D., Zydlewski, J., Hughes, E., Cox, O. (2015) Transport, dam passage and size selection of adult Atlantic Salmon in the Penobscot River, Maine. North American Journal of Fisheries Management. 35:1164-1176 | Download 2015-01-31
Izzo, L., Maynard, G.A., and Zydlewski, J. (2016) Upstream movements of Atlantic Salmon in the lower Penobscot River, Maine following two dam removals and fish passage modifications. Marine and Coastal Fisheries, 8(1): 448-461. DOI: 10.1080/19425120.2016.1185063 | Download 2016-07-31
Maynard, G.A., Kinnison, M.T., and Zydlewski, J. (2017) Size Selection from Fishways and Potential Evolutionary Responses in a Threatened Atlantic Salmon Population. River Research and Applications. 2017;1–12 DOI: 10.1002/rra.3155 | Download 2017-03-31
Maynard, G., Izzo, L., and Zydlewski, J. (2018) The fate of hatchery-spawned Atlantic Salmon kelts released into the Penobscot River, Maine. Fishery Bulletin 116:281-290. DOI: 10.7755/FB.116.3-4.6 | Download 2018-10-31
Presentations Presentation Date
Holbrook, C., J. Zydlewski, and M. Kinnison (2008) Effects of hydroelectric dams on survival and behavior of migrating Atlantic salmon smolts in the Penobscot River, Maine. Atlantic Salmon Research Forum. Orono, ME. January 8. PRESENTED. 2008-01-01
Holbrook, C., Zydlewski, J., Kinnison, M. (2007) Assessments of migrating Atlantic salmon (Salmo salar) smolts in the Penobscot River using acoustic telemetry. 137th Annual Meeting of the American Fisheries Society. San Francisco, CA. September 2-6. 2007-09-01
Holbrook, C., Zydlewski, J., Kinnison, M. (2007) Riverine passage success for pre-spawn adult Atlantic salmon in the Penobscot River. 137th Annual Meeting of the American Fisheries Society. San Francisco, CA. September 2-6. 2007-09-01
Zydlewski, J., Hughes, E., and Cox, O. (2010) Atlantic Salmon in the Penobscot River- Delays, Passage and Visions of Restoration. The 9th International Congress on the Biology of Fishes. Barcelona, Spain, 5-9 July. PRESENTED, INVITED. 2010-07-05
Sigourney, D., Hughes, E., Cox, O., O’Malley, A. and Zydlewski, J. (2012) Assessment of Live Transport of adult Atlantic salmon in the Penobscot River, USA. Oral presentation at the 142nd Annual Meeting of the American Fisheries Society, Minneapolis-St. Paul, MN. 2012-08-21
Sigourney, D., Hughes, E., Zydlewski, J., and Cox, O. (2012) Monitoring adult Atlantic salmon in the Penobscot River using PIT telemetry. 2012 Forum, Atlantic Salmon and their Ecosystems, Bangor Maine January 10-11. 2012-01-10
Sigourney, D. and Zydlewski, J.(2013) Modeling the downstream migration of silver American eel . The Nature Conservancy, Brunswick Maine. September 17. INVITED. 2013-09-17
Sigourney D. and Zydlewski, J. (2012) Passage at West Enfield Dam. Oral presentation at the Atlantic salmon passage working group, INVITED October 5. 2012-10-05
Sigourney D. and Zydlewski, J. (2012) Passage at West Enfield Dam 2002-2004 and 2010-2012. Oral presentation at the Atlantic salmon passage working group. INVITED, PRESENTED, October 8. 2012-10-08
Theses and Dissertations Publication Date
Holbrook, C. 2007. MS Thesis: Behavior and survival of Migrating Atlantic salmon (Salmo salar) in the Penobscot River and Estuary Maine: Acoustic Telemetry Studies of Smolts and Adults. 2007-03-31
Izzo, L. K. 2016. Exploring the threats of dams and ocean conditions: In-river movements and ocean growth of Atlantic salmon (Salmo salar) from Maine's rivers. Weaver 2017. Ph.D. Sea lamprey (Petromyzon marinus) as a functional link between marine and freshwater ecosystems. 2016-08-31