Alaska Fisheries Data Series Number 2005-13, October 2005

• Main Authors: U. S. Fish, Wildlife Service, Charles S. Gewin
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Weir; Yukon; Yukon river; Alaska
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.383.6102; http://www.arlis.org/docs/vol1/A/334966973etc/334966973etc-2004.pdf

A resistance board weir was used to collect abundance, run timing, and biological data from salmon returning to the East Fork Andreafsky River, a tributary to the lower Yukon River, between June 23 and September 19, 2004. In 2004, an estimated total of 8,045 Chinook salmon Oncorhynchus tshawytscha migrated through the weir. The run timing was early compared to the 1994-2003 average. Four age groups were identified from 517 Chinook salmon sampled with age 1.2 and 1.3 (both 39%) dominating. The sex ratio was 35 % female, 65 % male. The