1170 U. S. BUEEAU OP FISHERIES 



the year a survey for a pipe line from springs at the pumping plant on the 

 military reservation to the hatchery was being made, with the view of obtain- 

 ing an auxiliary water supply for tempering the city water, which is too warm 

 for trout in summer and so cold in winter as to retard the development of the 

 eggs beyond the period where strong healthy fish are possible. In the course 

 of the year the station received by transfer from other bureau stations approxi- 

 mately 170.000 eggs of the rainbow trout and 250,000 ol' the Loch Leven trout. 

 In addition to this stock 200,000 brook-trout eggs were derived from a com- 

 mercial hatchery. All of these were incubated and the fish reared to the finger- 

 ling stage before distributing them to applicants of the region. The year's 

 output also included over 150,000 bream and smaller numbers of yellow perch 

 and catfish, these fish having been collected from ponds in the vicinity. 



SPRINGVILLE (UTAH) STATION 



[Claudius Wallich, Superintendent] 



The following statement summarizes the fish-cultural achievements of tliis 



station during the fiscal year 1930 as compared with those of the preceding 

 year : 



1930 1929 



Egg collections 6, 910, 000 3, 690, 000 



Egg shipments - 1,797,000 364,400 



Distribution of fingerling fish 1, 622, 000 1, 407, 100 



Stock on hand at close of fiscal year 1, 569, 000 847, 000 



The rainbow trout work with station brood stock exceeded that of any former 

 year in that 2,827,000 eggs of fine quality were taken. Egg collections at Fish 

 Lake were 2,762,000 of the brook trout and 1,071,000 of the rainbow trout. 

 Loch Leven trout eggs to the number of 374,000 were received from the Boze- 

 man (Mont.) station of which amount 270,000 were turned over to the Utah 

 Fish and Game Commission. At Pyramid Lake, Nev., 250,000 black-spotted 

 trout eggs were taken. Eighty thousand of the 130.000 eyed eggs resulting 

 from this collection are being reared at Springville and 50,000 at the Verdi, 

 Nev., hatchery with the intention of returning the entire product to the Nevada 

 lake next winter. Material assistance in the distribution of fingerling fish 

 was received from the Utah Fish and Game Commission by placing at the 

 disposal of the station the State's large fish tank truck. This was used in 

 making four trips to Fish Lake, carrying from 125 to 150 quarts of solid fish 

 on each trip, or a total of nearly .500,000 brook trout fingerlings Nos. 2 and 3 

 for return to the lake. The work at Pyramid Lake, Nev., hampered in its 

 early stages by the hostility of resident Indians, was finally gotten underway 

 w^ith their tacit approval, and it is believed that continued sincere endeavors 

 by the bureau to better fish life conditions at the lake will result finally in the 

 development of an important egg-collecting field. The newly constructed con- 

 crete tank nursery was covered with a composition roof and equipped with 

 dams, screens, etc. This nursery contains 96 tanks each 2yo by 2i^ by 16 

 feet and is proving to be a most efficient acquisition. The additional water 

 secured via the highway conduit from the east side also gives a much needed 

 increase in the pond system supply. 



NEW ENGLAND TROUT STATIONS 



With the exception of the Nashua (N. H.) establishment all hatch- 

 eries in this group enjoyed a very successful season. The actual 

 numerical output of trout in this field is much below that of the 

 Western stations, but a larger proportion of the fish are distributed 

 as good sized fingerlings to meet the special demands arising in this 

 territory. 



BEBKSHIRE (MASS.) TROUT HATCHERY 

 [E. P. Thompson, Acting Superintendent] 



Five wells and five well points were driven during the year, increasing the 

 .station's water supply by 84 gallons per minute. Both hatcheries, tlAe garage. 



