THIRTIETH BIENNIAL REPORT If) 



A splendid aquarium has been built in the main hatchery building 

 exhibiting various kinds and species of trout raised in the state. 

 An outdoor pond is contemplated for similar purposes. 



Aside from utilitarian purposes, the hatchery is proving a very 

 valuable means of interesting and educating a great number of our 

 people in the work that is being done by the state in the propagation 

 and planting of fish. Hundreds of people from all parts of the state 

 and elsewhere fill this hatchery daily. Here they observe how actual 

 fish culture operations are conducted and are given further under- 

 standing of the biology of fish life and the necessity for its conserva- 

 tion through the medium of lectures which are given by trained men 

 stationed at the hatchery during the summer time. 



In the fall of 1926 a fine new hatchery was built on June Lake, 

 Mono County. In the spring of 1927 an experimental hatchery was 

 established on Walker River, Mono County. During the winter of 

 1927 a permanent hatchery was erected at Hammond. This is known 

 as the Kaweah Hatchery, and contains fifty troughs. 



Due to the fact that the water supply at Ukiah Hatchery was insuf- 

 ficient, it was deemed best to find another site in Mendocino County. 

 After a survey, a new hatchery was' established on Cold Creek and 

 a hatchery building completed in March, 1928. This is a fifty-two- 

 trough hatchery, with a cottage for the superintendent and rooms 

 for the help. A tank system and other improvements will be installed 

 in another year. 



During the fall of 1927 an experimental hatchery was established 

 on the Kern River near Kernville. The location did not prove suit- 

 able. The loss in young fish during the year was heavy and it is 

 probable that the site will have to be abandoned. 



A first-class hatchery with a capacity for 1,500,000 trout was estab- 

 lished on Big Creek, near Swanton, in Santa Cruz County. 



A centrally located site for the distribution of fish from the upper 

 San Joaquin River tributaries was located on Kings River about thirty- 

 five miles east of Fresno. Considerable expense and labor were required 

 to construct a diverting dam so as to provide a constant flow of water. 

 It is possible that a permanent hatchery building eventually will be 

 established at this site. 



In order to rear fish for southern California waters, two tank stations 

 Were built. Ten tanks, with a capacity of approximately fifty thousand 

 fish, were erected on Forsee Creek, a tributary of the Santa Ana River. 

 Another tank station of equal size was erected on the San Gabriel 

 River at Coldbrook Camp. Both stations are situated on national 

 forest lands. 



The Bureau of Fish Culture is now operating 25 hatcheries and 

 12 egg collecting stations. The output from the hatcheries during the 

 past biennium amounts to 51,444,562 trout and 26,728,590 salmon, 

 making the total of hatchery-reared fish 78,173,152, in addition to 11,281 

 fish rescued from overflowed areas and planted in reservoirs and 

 lakes at low altitudes. 



Another attempt was made to import ayu eggs from Japan. The 

 ayu is a notable food fish in Japan and this is not the first time ship- 

 ments of eggs have been made. When the eggs arrived in November 

 of 1926 they were in poor condition and not an egg was hatched. 



