FORTY-SECOND BIENNIAL REPORT 



33 



Fish and Game crews building the largest screen yet constructed in the Klamath drainage. It is 

 of the latest design, incorporating a 5/32-inch perforated steel plate 36' x 6' set at an incline 

 across the canal and cleaned by wiper bars moved up and down over the face of the plate by 



paddle wheels. 



Fishways 



Personnel from the Yreka stream improvement headquarters con- 

 structed three fishways over dams on the Salmon River, Siskiyou County. 

 The same personnel blasted several pools in bedrock to form a fislrway 

 at Burnt Ranch Falls on the Trinity River, Trinity County (Wildlife 

 Conservation Board Project 44-2). In Mono County, flood damage to 

 the embankments around the fishway at Lower Twin Lake was repaired. 



Barrier Removal 



The removal of abandoned dams to permit salmon and steelhead to 

 reach important spawning areas continued very satisfactorily in the 

 Klamath River drainage, with five dams in Trinity County removed 

 during the biennium. In addition, six log jam barriers were removed 

 from tributary streams. The general stream clearance program in the 

 Coast District, started in 1950, also showed good progress. In the entire 

 State, seven dams were removed, six barriers were reduced, and 11 log 

 jams were removed during the biennium. In addition, channel clearance 

 and brush and debris removal was carried out in a number of streams, 

 principally to facilitate the upstream passage of spawning fish. 



2—70679 



