Lake Chelan Tributary Kokanee Escapement, NPS, WDFW and CPUD Sample Clauses

Lake Chelan Tributary Kokanee Escapement, NPS, WDFW and CPUD. Chelan PUD has conducted annual Lake Chelan spawning surveys for kokanee and land- locked Chinook salmon since 1984. The purpose of these surveys is to document the annual trends of kokanee spawning populations within the Lake Chelan drainage (Stone and Xxxxxxx 2004). A majority of the natural production for kokanee in the Lake Chelan basin occurs in two-side channel complexes of the Stehekin River associated with Company and Blackberry creeks. Given the high amounts of spawning activity, these areas have been used as index reaches since 1984. Additional tributaries to Lake Chelan that have been included in the annual kokanee spawning ground surveys are: Xxxxxxxx, Gold, Grade, Safety Harbor, Prince, Fish, First, and Twenty-five Mile creeks. Prior to 2013, kokanee spawning surveys were conducted approximately twice monthly between August 31 and October 31 by CPUD based on the availability of survey crews. These surveys were conducted by walking in or along the streams and counting all live kokanee with tally counters. Large masses of kokanee were occasionally estimated when individual fish enumeration was not feasible (Stone and Xxxxxxx 2004). Due to a lack of CPUD staff, WDFW and NPS assumed responsibility for these surveys in 2016. Results of kokanee spawning ground surveys prior to 2013 can be found in Xxxxxx and Xxxxxx (2013). Preliminary results of the 2016 kokanee spawning ground surveys are outlined in Table 2-19 below. Table 2-19: Lake Chelan tributary kokanee escapement estimates, peak counts and peak count dates, 2016. Stream Peak Count Date Escapement Estimate 25-Mile 33 10/5/16 40 First 12 10/5/16 12 Xxxxxxxx 0 N/A 0 Gold 0 N/A 0 Grade 0 N/A 0 Safety Harbor 0 N/A 0 Prince 13 10/5/16 23 Fish 2 10/5/16 2 Blackberry 3,559 09/30/16 7,298 Company 24,725 09/22/16 48,782