| Map of Lake Sammamish tributaries. Those |
in red are tributaries where kokanee have
rarely been observed in recent years until
2012. Those in black are the four main
Agency staff members from King County, WDFW, and USFWS, as well as private landowners, conducted periodic surveys of these creeks in 2012. In addition to counting the live spawning fish, surveyors also collected kokanee carcasses in order to remove their otoliths (ear bones). The otoliths will be analyzed in the lab to determine if fish originated from Issaquah Creek State Hatchery or were naturally produced. Tissue samples were also taken from some of the fish to determine their genetic make-up.
This past year’s results indicate that Lake Sammamish kokanee are spawning in tributaries on all sides of the lake, underscoring the need to protect and restore as many tributaries as possible in order to sustain this native population.
| Kokanee spawning area in Schneider |
Creek. Prior to 2012, kokanee were
not known to use this tributary.