86 FISH AND GAME COMMISSION 



of that water. In several studies all available evidence has indicated that 



addition of a species would improve angling, and during the biennimn 



the following important introductions were made : 



Largemouth black bass into Shasta Lake, Shasta County, to provide a suitable 

 warm-water game fish (April. 1940). These fish are now spawning in the 

 lake, growing satisfactorily, and already producing some fishing. 



Kamloops rainbow trout into Shasta Lake, Shasta County, carried out by the 

 local sportsmen with the aid of the U. S. Fish and Wildlife Service and the 

 California Division of Fish and Game ; the sportsmen believed that this sub- 

 species of rainbow would grow faster and be a better game fish than the native 

 rainbows. 



Kokanee red salmon into Lake Tahoe, Placer and El Dorado Counties, to pro- 

 vide forage for the lake trout (mackinaw) (1949 and 1950). 



Greaser blackfish into East Park Reservoir, Colusa County, to provide forage 

 for the warm-water game fishes present. 



Five lakes of the Hooper Creek drainage, Fresno County, were planted with 

 wild, adult golden trout obtained from the adjacent Bear Creek drainage. This 

 plant was made at the expense of the Southern California Edison Company 

 as part of its special use permit to divert Hooper Creek. 



WATER USE PROJECTS 



The continued rapid expansion of activity in the hydroelectric, 

 irrigation storage, and flood control fields by governmental agencies and 

 corporations in California has provided the fishery interests with a host 

 of problems. With water as vital as it is to the economy of the State, it 

 is small wonder that the agencies constructing major dams and reservoirs 

 have been reluctant to look with favor on the release or reservation of 

 water for fish and fishing. However, during the biennium encouraging 

 progress has been made toward the recognition of fisheries interests in 

 the utilization of water. For example, a release of a minimum flow of 

 20 second-feet of water was secured below a new dam on the San Joaquin 

 River, whereas the release below an old dam just 11 miles upstream is 

 only 3 second-feet. In most recent projects the protection of fish life has 

 been included as an integral part of the planning, instead of being thrown 

 in as an afterthought, as was so often the case in the past. 



Some of the major developments which have received study by the 



biological staff and for which we have submitted recommendations for 



fishery protection during the biennium are the following : 



Klamath River, Siskiyou County. California-Oregon Power Company. Hydro- 

 electric power production causing fluctuation of river level and subsequent 

 stranding of salmonid fishes. 



Trinity River, Trinity County. U. S. Bureau of Reclamation. Proposed dams 

 at Fairview and Lewiston for diversion of water to Sacramento River. Such 

 diversion would greatly affect salmonid fishes below. 



Feather River, Butte County. Oroville (or Bidwell Bar) Dam site. Hydro- 

 electric and irrigation water storage dam with powerhouse aufl canals. "Will 

 affect sections of the North, Middle, and South Forks of the Feather River 

 and will cut off considerable salmon and steelhead spawning grounds. 



Feather River, North Fork. Plumas Comity. Pacific Gas and Electric Com- 

 pany. Cresta and Rock Crccli liydroelcctric power dams and tunnels, affecting 

 sections of the .\<irlli I'mk of the Feather River. 



Feather River, South Fork, liiitle Couiily. Oroxille-Wyandotte Diversion Dam. 

 J'.arrier to salmon and stecllicMd. Kccoiiinicndations made for ladder. 



