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

North Carolina Project

Hydroacoustic monitoring of anadromous fishes in the Roanoke River

July 2007 - June 2013


Participating Agencies

  • North Carolina Wildlife Resources Commission
Transducer and frame used for split-beam echosounder

Anadromous fishes spend the majority of their adult lives in the ocean and make yearly migrations (runs) into coastal rivers to spawn. These species are targeted by commercial and recreational fisheries both in the ocean-estuarine environment and during their runs into coastal rivers. Information on abundance of these important species is needed in order to properly regulate harvests and to assess the effectiveness of rebuilding efforts. The primary objective of this study is to estimate the size of spawning runs of American shad, striped bass, and other anadromous species. A related objective is to gain a detailed understanding of migratory behavior in order to design an effective monitoring program and interpret the hydroacoustics data.

Presentations Presentation Date
Waine, M. W., and J. E. Hightower. 2009. Assessing spawning runs of anadromous fishes using split-beam and multi-beam sonar systems. American Fisheries Society, Nashville, Tennessee, August 30-September 3, 2009. September 2009
Waine, M. W., J. E. Hightower, and K. M. Boswell. 2008. Deployment of split-beam and DIDSON systems to estimate abundance of anadromous species in the Roanoke River, NC. DIDSON-Based Fish Assessment Workshop, Alaska Chapter of the American Fisheries Society, Anchorage. October 26-28, 2008. October 2008
Hughes, J. B., and J. E. Hightower. 2011. Assessing spawning runs of anadromous fishes using a combination of split-beam and DIDSON count data. 141th Annual Meeting, American Fisheries Society, Seattle, WA, September 4-8, 2011. September 2011
Hughes, J. B., and J. E. Hightower. 2012. Using multiple sonar deployments to improve run-size estimates of anadromous fishes. NC Chapter, American Fisheries Society, Raleigh, North Carolina, February 28-29, 2012. February 2012