ALASKA FISHERY AND FUR-SEAL INDUSTRIES, 1929 251 



feet wide was made through the dam of the Kasaan Gold Co. on 

 Harris River. For several years this dam has more or less blocked 

 the passage of the fish to the spawning grounds, as the fish ladder 

 was not effective except during ])oriods of very high water, which 

 usually occur at times when no fish are running. 



In streams tributary to Izhut and Seal Bays on Afognak Island 

 where waterfalls were impassable to salmon the rocks were blasted 

 by dynamite, after which the fish began to ascend immediately. 

 Part of the work in the Cook Inlet area consisted of keeping open 

 coastal streams that became blocked with gravel washed up by the 

 heavy surf. Various other stream improvements were made in the 

 fall by bureau employees when checking up escapements in the 



Figure 1.— Typical log jam for removal from creek to enable passage of salmon, southeast Alaska 



several districts, and plans were outlined for additional work to be 

 undertaken in the early spring. 



STREAM MARKING 



Virtually all of the salmon streams in Alaska have been marked to 

 show the limits of waters closed to commercial fishing, but attention 

 is given each year, particularly in the spring, to the repair and replace- 

 ment of markers that have been defaced or destroyed. New markers 

 are erected and changes in location of old ones are made from time to 

 time in accordance with changes in the regulations respecting closed 

 areas. 



STREAM GUARDS 



The bureau employed 216 men in 1929 as stream guards and 

 special workmen in connection with law-enforcement duties. Of 

 these, 106 were stationed in southeastern Alaska, 71 in central, and 

 117716—30 4 



