INTRODUCTION 



The purpose of the Columbia River Stream Survey has been to pro- 

 vide data for the evaluation of each stream, or portion of stream, 

 from the standpoint of its present and potential value in relation to 

 the maintenance of the salmon resources of the Columbia River The 

 Columbia River watershed has been divided into several survey areas 

 or units as shown in Figure 1 This report deals with the streams in 

 A r ea VII. 



Area VII includes the Snake River and its tributaries from a point 

 above the mouth of the Payette River to Upper Salmon Falls. The area 

 begins approximately 3S>7 miles above the mouth of the Snake River and 

 extends for a distance of approximately 216 miles upstream. 



It has been reliably reported that in the early days salmon and 

 steelhead trout ascended the Snake River for a distance of approximate- 

 ly 600 miles to the impassable Augur Falls opposite the town of Jerome, 

 Idaho, and that there was a good salmon run into Rock Creek, a minor 

 tributary just below Augur Falls There have been no salmon reported 

 in the upper part of this area for many years, although an occasional 

 steelhead trout has been reported. 



Because of the present depleted condition of the former runs of 

 salmon into the area and its slight potential value to anadromous fish 

 due to water-use developments, the area was not given as complete a 

 survey from the standpoint of fisheries rehabilitation as was accorded 

 the lower Columbia River system,, 



