ALASKA FISHERY AND FUR-SEAL INDUSTRIES, 1922. 



31 



It Is the intention to place a crew of residents on patrol boat No. 1, which 

 was left on the ways at the head of the lake, and proceed immediatelj- after 

 the break-up to Intricate Bay, where operations will be begun. 



Sufficient equipment and mess supplies were stored at Ilianina for work 

 next year in this sector. One of the smaller patrol boats is to be dispatched 

 with a crew from Naknek to undertake operations at the lake outlet. 



Considerable work was accomplished on the fishway at Kokhonak Falls. 

 The grade was made easier, the passage wider, and a new resting pool added 

 to the lower end of the passage, which now enables the salmon to get over 

 the falls without obstruction. To complete these improvements several tons 

 of rock were removed by blasting. 



The total catch in this sector for the season was 3,697 fish weighing 9,242 

 pounds, an average of 2^ pounds each. Ninety per cent were Dolly Vardens, 

 the remainder being lake and rainbow trouts and pike. 



Upon completion of the work the launch and equipment were overhauled 

 and the former was placed on the ways at Goose Bay, the latter stored at the 

 home of O. B. Millett. 



Predatory trout taken in 1922. 



Location operated. 



Naknek 



Egegik 



I'gashik. . . 

 Kushagak. 

 Iliamna. .. 



Total 



Fish 

 taken. 



Number. 

 3,426 

 10,063 

 S,946 

 7,410 

 3,697 



Average 

 weight. 



Pound.''. 

 12 

 4 

 2i 

 2i 

 2J 



33, 542 



Total 

 weight. 



Povnds. 

 41,112 

 40,252 

 22, 365 

 18, 525 

 9,242 



131,496 



Dolly 



Vardens. 



Per cent. 

 10 

 100 

 SO 

 95 

 90 



Lake 

 trout. 



Allothers, 

 steeUiead, 

 rainbow 

 trout, and 

 pike. 



Per cent. Per cent. 

 80 10 



Recapitulation. — It is felt that the work of destroying predatory fish is show- 

 ing results, as reduced numbers are encountered in streams that have been 

 aggressively fished. This is very noticeable in Iliamna River and the upper 

 portion of Iliamna Lake, also in certain creeks in Little Becharoff Lake, notably 

 Kanatak Creek and vicinity. The work in this section proves also that a con- 

 tinuous war must be waged against the marauders. 



Practically all the trout captured this year were large, fat, and sea-run. The 

 majority taken in previous years had the appearance of being lake fish. Most 

 of the fish captured through the entire season's operations were Dolly Vardeu 

 trout. 



The small trap installed this year at Ugashik as an experiment can be utilized 

 with profit at Wood River and possibly other points where sea-run trout may be 

 intercepted. It is cheap, efficient, easy to install, and, with slight changes as 

 to leads and pots, can be made to fish both incoming and outgoing trout, the 

 incoming feature to be removed as the salmon appear and the outgoing portion 

 to remain efficiently operating for the migrations that occur through July at 

 Ugashik. It is assumed that a like migration occurs at other lakes. The 

 bureau is furnishing web for this purpose, and measurements of the width of the 

 river at the lake outlet, together with water depths, are at hand. 



Experiments were made with small-caliber shotguns (36 gauge) in making 

 war on terns. Excellent execution was possible from the stern of the boat, as 

 there are usually several birds following in the wake of each boat, picking up 

 small fish that are worked to the water's edge by action of the propeller. The 

 cost of the gun and ammunition is nominal, and the guns can be profitably 

 utilized on all boats. 



EXTENT OF SALMON RUNS. 



There were approximately 1,500,000 cases of fish packed in Bristol Bay 

 during the current .vear. of which about 70 per cent was reported for the east 

 shore, including Kvichak, Naknek, Egegik, and Ugashik, and 30 per cent for the 



54940°— 23 3 



