Document Library

BioSonics was contacted by Oregon Department of Fish and Wildlife (ODFW) in January of 2002 and asked to consider the potential for hydroacoustic assessment of herring biomass in Yaquina Bay Oregon. ODFW indicated that this would be a joint project, sponsored by ODFW and Yaquina Herring, Inc (YHI, a commercial fishing association). The survey was to (1) be of short duration, (2) provide an estimate of the “minimum biomass” of herring present in Yaquina Bay, and (3) provide a report of biomass to the sponsors immediately after the survey was completed. The stated purpose of the survey was to establish a minimum sampled biomass estimate, which could be used for harvest planning purposes. This report summarizes the findings of the study, including an estimate of the biomass of herring observed during the survey, methods, data summary, graphics, and recommendations for future hydroacoustic assessment work.