PROPAGATION AND DISTRIBUTION OF FOOD FISHES, 1931 659 



trout were filled. In cooperation with the Oregon Game Commission a fishery 

 exhibit was displayed at the Pacific International Livestock Exposition. 



Upper Clackamas (Oreg.) substation. — Only egg-collecting operations were 

 undertaken in this field. Eggs of the fall chinook salmon to the number of 

 2,025,000 were secured here, and all of them were transferred in the green state 

 to the Clackamas station for incubation. 



Little White Salmon (Wash.) substation.- — The usual racks and traps were 

 installed in the Little White Salmon River early in September. Egg collections 

 of the chinook salmon were made between September 22 and October 12, and 

 though the water stage in the river was exceptionally low, the season's collection 

 amounted to 24,880,000 eggs, or more than two and one-half times the number 

 obtained in the previous year. With the view of intercepting any chum salmon 

 in the river, the main head rack was maintained until late in iSTovember, making 

 possible a collection of 375,000 eggs of that species. Of the chinook eggs secured 

 12,794,000 were transferred to outside points. The remainder were incubated 

 and the resulting fish were liberated in the fingerling stage in the Little White 

 Salmon River. Eighteen tons of salmon flesh were preserved in the cold-storage 

 plant. In addition to this food, a considerable amount of horse flesh and con- 

 demned canned salmon was utilized in connection witii the rearing operations. 

 A 2-foot continuous wood stave pipe to a length of 1,100 feet was installed for 

 a main water-supply line. There still remain 1,700 feet of pipe to be installed, 

 together with an 80-foot trestle across the Little White Salmon River. During 

 June the efficiency of the station was increased by the establishment of electric 

 power and lighting facilities. 



Big While Salmon (Wash.) substation. — The usual preparations were made 

 for taking spawn of the fall chinook salmon in the Big White Salmon River and 

 Spring Creek. By virtue of frequent and heavy stocking, the latter egg source 

 has been built up from a stream barren of salmon to a first-class egg-collecting 

 point: and in 1931, 4,087,000 eggs were secured from it, in addition to 9,050,000 

 obtained from the river. Of the season's collection of 13,137,000 eggs 3,434,000 

 were transferred to outside points. The remainder were incubated and late in 

 May 8,320,000 fingerling salmon were available for distribution. Of these, 1,620,000 

 were planted in the Big White Salmon. The remainder were deposited in the 

 Columbia River. Eggs taken from the Big White Salmon River were, as usual, 

 transferred in the green state to the hatchery, and with very good results. 



A number of brook and rainbow trout were reared for the Klickitat County 

 game commission, for filling applications submitted for the stocking of private 

 ponds. Spawned-out salmon, frozen and held in the refrigerator at the Little 

 White Salmon station, was used as fish food, being utilized with quantities of 

 horse meat, horse liver, beef spleen, and sheep liver. Patrolmen were again 

 employed for the purpose of preventing illegal net and troll fishing, a practice 

 which has increased greatly in recent years. As heretofore, one man was em- 

 ployed by the bureau and a man to act as his assistant was furnished by the fish 

 commission of Oregon. Badges of authority for this work were granted the 

 bureau by the State Fisheries Department of Washington. 



Rogue River (Oreg.) substation. — The chinook salmon spawning season opened 

 August 14 and continued to October 3, during which time 4,901,000 eggs were 

 taken, as compared with 588,000 obtained last year. Eggs to the number of 

 780,000 were transferred to other points, and from the remainder 3,669,000 

 fingerling fish were produced and liberated in the Rogue River. In making the 

 distribution 1,534,000 were transported below the Savage Rapids Dam in order 

 to avert their possible loss later on in passing through the turbines pumping 

 water to the main irrigation ditches at that point. Since the passage of the 

 "White bill" efforts have been made to purchase a suitable site for a new fish- 

 cultural station in the Rogue River field. It is expected that this new unit will 

 be located adjoining the Butte Falls hatcher}- of the Oregon Game Commission. 

 Efforts are also being made to purchase a site for the establishment of a permanent 

 rack and trap in Big Butte Creek, for the purpose of making egg collections of 

 the silver salmon, steelhead salmon, and cutthroat trout. 



Applegate Creek {Oreg.) substation. — The run of silver salmon again proved 

 disappointing and only 445,000 eggs were collected. To assist in maintaining 

 the run 100,000 eggs of this species were transferred from the Quinault (Wash.) 

 field. While the run of steelhead salmon in Applegate Creek was above normal 

 only 1,741,000 eggs were secured. This was due to a changed method of opera- 

 tion. In past years the bureau has been subjected to criticism as a result of 

 stcelheads being lost in holding them in inclosures to ripen. To avert this, only 

 fish in ripened condition, or nearly so, were retained. The green fish captured 



