-394 U. S. BUREAU OF FISHERIES 



supply made prior to these alterations will be repeated later to deter- 

 mine the results. 



The survey party in Nevada studied the streams and lakes in a 

 portion of Humboldt Forest. Although difficult of access, these 

 waters are becoming more heavily fished each year and stocking 

 plans for them are in great demand. The superiority of eastern 

 brook and cutthroat trout over the rainbow for these high waters 

 was clearly proved by results of the survey. The need for pool 

 improvement was also demonstrated. 



In Arizona the survey party examined the waters of the Coconino, 

 Ton to, Crook, Coranodo, Apache, and Tusan Forests, and a portion 

 of the San Carlos Indian Reservation. The enormous area coveed 

 was due to the scarcity of water in this region and the numerous 

 roads. However, this very scarcity enhances the value of the public 

 fishing water and is resulting in strenuous efforts of the fish and 

 game commission and Forest Service to maintain the angling. The 

 need for more systematic stocking, better regulation, stream-improve- 

 ment work, and erosion control was demonstrated by the survey. 



Portions of the Santa Fe and Carson Forests were studied by the 

 New Mexico party. These areas are used extensively for recreation 

 and the fishing has been declining in spite of the excellent work of 

 the fish and game commission. The survey's results indicated a need 

 for stricter regulation of fishing or more frequent planting of legal- 

 sized fish. Recommendations for additional stream and lake improve- 

 ment were also made. 



The Colorado survey party worked in close cooperation with the 

 Forest Service in carrying out the program for improvement of 

 fishing in the Arapaho, Roosevelt, Pike, and San Isabel Forests. Rec- 

 ommendations for stream improvement and rearing pond construc- 

 tion were acted upon immediately during the past season. Detailed 

 plans are being prepared which should assist in the stocking of these 

 waters. 



The Wyoming survey party studied a portion of the Wyoming 

 Forest. The lower waters in this area, which are accessible by road, 

 are heavily fished. It is the desire of the fish and game commission 

 and the Forest Service to stock the higher waters according to their 

 requirements in order to induce the anglers to fish there, thereby 

 relieving the strain on the lower waters. Because of transportation 

 difficulties only a limited number' of waters could be studied this 

 season. However, sufficient information was secured to enable some 

 generalizations covering the species best adapted, and the intensity 

 of planting which should be carried on in this region. 



COOPEKATION WITH THE FOREST SERVICE IN STREAM AND LAKE 



IMPROVEMENT 



The West Fork of Rock Creek in the Deer Lodge Forest in Montana 

 was selected as an experimental stream-improvement project. Care- 

 ful counts of the fish and fish-food population were made in a section 

 of this stream. Sixty-eight structures of various types were then 

 installed. An accurate, large-scale map showing bottom types, loca- 

 tion of counts, plant beds, and structure location was made. Careful 

 studies in the future will be carried out to determine the benefit of the 

 improvement w^ork in this stream. 



