Table 20 



. — Migranl 



releases 



of chinook and coho salmon 



— Colum 



bia Basin- 



Oregon 1 









(in 



thousands) 













Fall chinook 

 Number Pounds ; 



Spring chinook Summer 

 Number Pounds Number 



chinook 

 Pounds 



Coho 



year 



Number 



Pounds 



1960 



34.585.9 



99.1 



6,017.4 



168.3 



0.0 



0.0 



3,545.8 



156.6 



1961 



15,737.3 



78.1 



3,815.6 



144.6 



0.0 



0.0 



5,926.6 



266.7 



1962 



15,035.9 



57.5 



3,031.9 



128.8 



0.0 



0.0 



7,814.9 



413.9 



1963 



17.396.S 



93.1 



7,061.5 



272.0 



0.0 



0.0 



7,320.0 



382.3 



1964 



26,171.5 



174.8 



9.430.6 



312.6 



0.0 



0.0 



8,294.8 



437.3 



1965 



19,999.9 



141.3 



4.314.8 



173.6 



0.0 



0.0 



6,763.3 



390.4 



1966 



17,988.3 



174.3 



8.272.0 



363.1 



0.0 



0.0 



6,730.6 



394.7 



1967 



21,365.0 



193.9 



9,162.6 



419.0 



0.0 



0.0 



8,699.2 



471.6 



1968 



22,709.6 



270.6 



8.576.8 



554.5 



0.0 



0.0 



7,037.5 



411.5 



1969 



22,491.1 



225.3 



4,256.6 



334.4 



0.0 



0.0 



7,235.1 



480.8 



1970 



32,901.2 



358.9 



6,975.9 



683.2 



0.0 



0.0 



6,719.1 



419.6 



1971 



33,583.9 



276.0 



3,140.9 



288.3 



0.0 



0.0 



6,087.4 



397.6 



1972 



32,185.0 



341.9 , 



. 4,122.2 



356.0 



0.0 



0.0 



11,731.4 



814.5 



1973 



32,583.3 



371.6 



5.514.3 



609.0 



0.0 



0.0 



7.917.6 



481.7 



1974 



33,317.2 



359.9 



3,722.6 



321.0 



0.0 



0.0 



8,117.3 



482.9 



1975 



31,444.4 



372.6 



6.246.2 



498.5 



6.2 



0.2 



8,293.7 



575.6 



1976 



40,681.6 



525.7 



4.810.5 



439.8 



62.8 



2.2 



9.234.7 



599.6 



Total 



450.177.9 



4.114.6 



98,472.4 



6.066.7 



69.0 



2.4 



127.469.0 



7,577.3 



'Derived from VVahle et al. (1975) prior to 1974, Oregon Department of Fish and Wildlife 

 release records, and U.S. Fish and Wildlife Service hatchery annual reports. 

 2 1 lb = 0.454 kg. 



Table 21 



.— Migran 



t releases of chum salmon a: 



nd sea-run 



cutthroat trout — ( 



'olumbia 









Basin-Oreg 



on 1 (in thousands). 









Release 



Chum 



Winter steelhead 



Summer steelhead 



Sea-run 



cutthroat 



year 



Number 



Pounds 



Number 



Pounds 



Number 



Pounds 



Number 



Pounds 



1960 



0.0 



0.0 



388.8 



61.0 



17.4 



1.6 



1.2 



1.3 



1961 



12.8 



0.1 



307.7 



27.4 



63.1 



6.9 



9.0 



1.8 



1962 



314.6 



0.6 



1,096.9 



72.8 



0.0 



0.0 



9.7 



3.1 



1963 



280.9 



0.4 



746.2 



45.9 



70.4 



6.6 



6.5 



1.9 



1964 



0.0 



0.0 



695.0 



62.3 



136.0 



13.2 



0.0 



0.0 



1965 



0.0 



0.0 



758.2 



75.2 



59.0 



6.4 



1.0 



0.3 



1966 



315.4 



2.0 



854.0 



89.4 



153.0 



22.6 



0.0 



0.0 



1967 



372.0 



2.8 



1,004.9 



96.6 



114.9 



12.2 



7.5 



2.4 



1968 



135.0 



0.5 



980.9 



86.1 



390.3 



38.5 



0.0 



0.0 



1969 



82.6 



0.2 



883.0 



87.0 



530.6 



59.8 



0.0 



0.0 



1970 



0.0 



0.0 



712.5 



89.3 



456.2 



63.9 



1.2 



3.9 



1971 



0.0 



0.0 



748.1 



73.0 



441.7 



64.3 



7.0 



1.8 



1972 



0.0 



0.0 



887.8 



113.4 



759.0 



126.5 



13.7 



3.4 



1973 



0.0 



0.0 



824.4 



123.2 



1,009.1 



175.3 



8.5 



2.4 



1974 



0.0 



0.0 



1,048.8 



137.7 



998.5 



132.7 



0.0 



0.0 



1975 



0.0 



0.0 



849.9 



125.9 



876.6 



135.8 



34.1 



11.1 



1976 



0.0 



0.0 



949.1 



127.1 



1,011.8 



191.2 



40.9 



11.3 



Total 



1.513.3 



6.6 



13.736.2 



1,493.3 



7.067.6 



1,057.5 



140.3 



44.7 



'Derived from Wahle et al. (1975) prior to 1974, Oregon Department of Fish and Wildlife 

 release records, and L'.S. Fish and Wildlife Service hatchery annual reports. 

 -1 lb = 0.454 kg. 



some of these are voluntarily funded by county govern- 

 ments or private industry, most were constructed and are 

 supported as compensation for loss offish spawning areas 

 due to construction of dams and other water related pro- 

 jects. Coleman NFH, operated by the USFWS, was built 

 in 1942 in conjunction with Shasta Dam and the Central 

 Valley Project which blocked salmonid access to a large 

 area of the Sacramento River drainage. The Trinity 

 River and Nimbus hatcheries were both built by the 

 Bureau of Reclamation to compensate for construction of 

 the Trinity Dam and the Folsom and Nimbus Dams, re- 

 spectively. Additionally, Iron Gate and Mokelumne are 



funded by power companies and the Feather River 

 Hatchers' is supported by the California Department of 

 Water Resources. 



HATCHERY TRENDS 



Hatchery Numbers 



Since the first Pacific coast hatchery was built in 1872, 

 rearing of salmon and steelhead trout has become a big 

 business, both in efforts and dollars expended and bene- 

 fits derived. In the late 1800's and early 1900's, many 



26 



