1154 U. S. BUREAU OF FISHERIES 



salmon were preparing to ascend these streams necessitated the employ of pa- 

 trolmen during this period. The bureau employed one man, and another was 

 emiiloyed by the Oregon Game Commission. 



Rogue River (Orcg.) )<ubst(itio)i. — Rearing facilities at this point were im- 

 proved by the installation of a 4-inch centrifugal pump oiierated by a 10-horse- 

 power electric motor. The chinook spawning season, which opened September 

 9, was an extremely disappointing one ; only 588,000 eggs were secured, repre- 

 senting the smallest take in years. The failure is ascribed in part to the spac- 

 ing of the head-rack pickets 2V2 inches apart instead of 2 inches. This action 

 was taken owing to complaints received from various sportsmen to the effect 

 that the 2-inch spacing prevented steelhead and other trout from ascending the 

 river. No other collections were made but a consignment of sockeye salmon 

 eggs was received. The fry from these were transferred to the Butte Falls 

 hatchery of the Oregon Game Commission for rearing. In cooperation with 

 that commission, a census of the chinook salmon ascending Rogue River to 

 spawn Avas taken at the Savage Rapids Dam. Up to July 1 approximately 

 24,000 salmon had ascended. 



Appleyate Creek (Oreg.) substation. — Approximately 1,700,000 steelhead 

 trout were on hand July 1, 1929, and in the course of that month 1,685,000 

 of them were liberated in Applegate Creek. Tlie run of silver salmon in this 

 stream was almost a failure, only 190,000 eggs being taken. Very favorable 

 results attended the efforts to collect steelhead eggs and slightly mere than 

 S. 000,000 were secured. As a i^esult of severe criticism from sportsmen and 

 others of the region, .spawn was tliis year collected from steelhead trout with- 

 out killing the fish and all spawned-out fish were returned to the waters of 

 Applegate Creek. After making the desired shipments of e.ved steelhead 

 eggs the remaining eggs and fry were transferred to the Butte Falls hatchery 

 ■of the Oregon Game Commission for rearing. By this means the fish were 

 reared to a larger size than would otherwise have been possible, and the 

 •expense of operating the Applegate Creek hatchery during June was eliminated. 



S(ilmo7i (Idaho) substation. — At the opening of the .vear 786.000 rainbow-trout 

 ^ggs were on hand. A consignment of 50,000 of these was transferred to the 

 bureau's Leadville (Colo.) station, and nearly 714.000 fingerling fish, the 

 product of the remainder, were planted in the mountain streams of tlie region. 

 The run of spring chinook salmon in the Lemhi R'ver was almost a failure, 

 only 351.000 eggs being collected. After carrying them to the eyed stage at 

 the point of collection, these were transferred to the main hatchery at Salmon 

 for the completion of incubation. With the view of assisting to maintain the 

 run of spring chinook salmon in the Salmon River, 2,720.000 eggs were trans- 

 ferred here from the McKenzie hatchery of the Oregon Fish Commission. Of 

 the total of 3,071.000 chinook eggs handled, 3,055,000 were hatched and ap- 

 proximately 3,000.000 No. 1 fingerlings were produced and liberated in the 

 Lemhi River or its tributaries. The State of Idaho cooperated with the bureau 

 in collecting 1,468,000 rainbow-trout eggs in Williams and Jimmy Smith Lakes. 

 With the exception of a normal loss this collection, in the form of eggs and 

 fry, was on hand at the end of June, 1930. 



HAIIiD (CALIF.) .STATION AND SUBSTATIONS 



[W. K. Hancock, Superintendent] 



General repairs and improvements were made to the station buildings in 

 the summer of 1929. Two new plank and earth ponds were built back of the 

 power house and fed through a fiume from a settling tank. Another pond 

 was constructed in front of the mess house and fed from a spring. Seining 

 for chinook salmon in the McCloud River was undertaken on September 3 and 

 continued at intervals until October 14, during which time 500,000 eggs were 

 taken. While this may be con.siderod a small collection, it was mucli larger 

 than any that had been made in the river in the recent past. Experience having 

 demonstrated that there would be no opportunity to add to it by attempted 

 collections from tlie limited run of fall fish, the racks wore removed from 

 the river at the close of the early run. All spent salmon used in the work 

 were salted down for fish food. 



There being no water in the gi*avity ditch, the eggs were developed in 

 troughs set up outside the hatchery. The stock was held in this way until 

 the growing fish became crowded, when they were transferred to the hatchery. 



