Data from: Sonar estimation of summer chum and pink salmon in the Anvik River, Alaska, 2018

Dual-frequency identification sonar (DIDSON) was used to estimate adult
summer chum salmon Oncorhynchus keta and pink salmon O. gorbuscha passage
in the Anvik River from June 15 to July 26, 2018. Apportionment to species
was determined using data collected from tower counts. A total of 305,098
(SE 5,926) summer chum and 1,122,346 (SE 7,588) pink salmon were estimated
to have passed the sonar site. A beach seine sample fishery was conducted
to collect age, sex, and length information. Both sonar systems functioned
well with minimal interruptions to operation. Range of ensonification was
considered adequate for most fish that migrated upstream.