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Chinook and coho are reared by the state Issaquah Salmon Hatchery, located three miles upstream from the creek's mouth. [3] The hatchery has been releasing Chinook salmon into Issaquah Creek since 1936. [8] Each Spring the hatchery releases approximately 500k coho (April 1) and 2.7 million Chinook smolts (in May) have been released each year. [9]
The world's largest producer and market supplier of Chinook salmon is New Zealand. In 2009, New Zealand exported 5,088 tonnes (5,609 short tons) of Chinook salmon, marketed as king salmon, equating to a value of NZ$61 million in export earnings. For the year ended March 2011, this amount had increased to NZ$85 million.
It is a major migration route for Pacific chinook salmon that spawn in the Selway River. [8] Although the Middle Fork flows through a tight canyon, it is characterized by gentle Class I and II rapids suitable for floating, especially in late summer after the peak snow melt has decreased. [9] U.S. Route 12 follows the entire length of the river. [2]
The lower Klamath River experienced a mass die-off of at least 34,000 adult Chinook salmon in September 2002, which was attributed to atypically low flows that delayed salmon migration and high water temperatures that allowed massive spread of ich and columnaris among the waiting fish. [145]
The Cove Power Plant on the lower Crooked River, built around 1910, effectively blocked upriver migration of spring Chinook Salmon during low streamflow conditions. In addition, Ochoco Dam, built in 1920 on Ochoco Creek, blocked fish passage completely. Round Butte Dam, built in the 1950s on the Deschutes River below the Crooked River ...
A grizzly bear ambushing a jumping salmon during an annual salmon run. A salmon run is an annual fish migration event where many salmonid species, which are typically hatched in fresh water and live most of their adult life downstream in the ocean, swim back against the stream to the upper reaches of rivers to spawn on the gravel beds of small creeks.
[6] [8] In 2013, a genetics study of Napa River chinook salmon revealed that two adults migrated from the Klamath River and successfully spawned in the Napa River, since four juvenile chinook collected from the Napa River in 2010 were proved to be siblings from the close similarity of their DNA and that the latter was characteristic of Klamath ...
The hatchery releases Chinook salmon from three locations. The first location is the Lower American River at the Sunrise Avenue river access, where 1.33 million are released annually. The second location is found in the Lower American River under the Jibboom Street Bridge, where another 1.33 million salmon are released.