Status and Trends - Fish
 
fWenatchee Subbasin bar During the pre-treaty era, salmonids were abundant in the Wenatchee Subbasin; however, exploitation and habitat degradation depleted the runs. Spring Chinook redd counts have fluctuated since the 1950s. From 1958 to 2002, the spring Chinook redd count average and escapement estimate were 560 and 1,200, respectively. Decadal counts for summer steelhead have fluctuated since the 1930s, with a significant increase observed in the early-2000s. Coho, extirpated in the early-1900s, have recently been reintroduced by the Yakama Nation. Natural reproduction is now occurring in the subbasin.

 
 
Wenatchee Subbasin fish infographics

 


 Spring Chinook

Average 510 more spawners per year, 2008-2017 versus 1999-2007

 

Hatchery releases are CPUD/USFWS/WDFW mitigation and supplementation efforts

 

Yakama Nation will be assisting with experimental acclimation to improve homing to areas of better habitat quality

Wenatchee Spring Chinook

 


Wenatchee Summer Chinook

 

 Summer Chinook

Purpose of GPUD/CPUD hatchery releases is for increased harvest opportunity

 

An integrated program, hatchery fish are released into the Lower Wenatchee to reduce potential impacts on spring Chinook

 

 

Coho

Extirpated in the 1930s, Yakama Nation began reintroducing in 1999

 

Average annual estimated run size is 3,632 fish (2009-2017)

 

908,000 smolts released per year (average 2008-2015)

Wenatchee Coho

 


Wenatchee Steelhead

 

Summer Steelhead

Steady returns, with annual fluctuations, since 2002

 

Most hatchery releases are CPUD- funded

 

Yakama Nation, with CPUD and WDFW,  has participated in Accord-funded research on improved homing