Skagit System Cooperative, United States Geologic Survey, 1999. Skagit Chinook Life History Study Progress Report Number 2. Skagit System Cooperative, La Conner, WA. pp. 16.

This report summarizes progress made by the Skagit Chinook Life History Study during 1998. The multi-year workplan includes: (1) preparation of juvenile Skagit chinook otolith samples collected by the Skagit Chinook Restoration Study, (2) visual and quantitative analysis of the otolith samples, (3) identification of naturally induced transition checks or points on otoliths, and (4) identification of juvenile life history types based on the presence or absence of these checks and the time (residence) elapsed between marks. This progress report focuses on results for 1998.