26 



Conservation Department 



we find streams long stretches of which exceed 30 feet in width 

 with pool and food conditions generally of A-l grade. The 

 numerous tributaries are nearly all permanent and entirely suit- 

 able for brook trout. The country is in most part covered with 

 forest and the streams in general are densely shaded with alders, 

 especially the smaller ones which are too densely covered to permit 

 angling. The main stream can rarely be reached except by trail, 

 and while many local sportsmen fish it regularly, the country is 

 sparsely populated and the stream is far from overfished in com- 

 parison with the other localities covered. The density of trout 

 population is easily observed to be far greater than in any other 

 section studied, and at present natural spawning is an important 

 factor in keeping up this population. 



Calculating the Number of Trout per Mile of Stream. — 



The method described in the Report of the Genesee Survey has 

 been used in the present calculations. Reference is made to Table 

 8 reproduced herewith, showing the number of 3-inch fingerlings 

 per, mile for streams of various widths. In order to use this table 

 one must first determine the average width of the stream, the 

 number of miles suitable for stocking and values for pool (A, B 

 and C) and food (1, 2 and 3) conditions as already described. 



Table 



-Planting Table for Trout Streams : Number of 3 -inch 

 Fingerlings per Mile 



WIDTH IN FEET 



Al 



A2 



A3 



Bl 



B2 



B3 



CI 



C2 



C3 



1 



144 



288 



432 



576 



720 



864 



1,008 



1,152 



1,296 



1,440 



117 

 234 

 351 

 468 

 585 

 702 

 819 

 936 

 1,053 

 1,170 



90 

 180 

 270 

 360 

 450 

 540 

 630 

 720 

 810 

 900 



117 

 234 

 351 

 468 

 585 

 702 

 819 

 936 

 1,053 

 1,170 



90 

 180 

 270 

 360 

 450 

 540 

 630 

 720 

 810 

 900 



63 

 126 

 189 

 252 

 315 

 378 

 441 

 504 

 567 

 630 



90 

 180 

 270 

 360 

 450 

 540 

 630 

 720 

 810 

 900 



63 

 126 

 189 

 252 

 315 

 378 

 441 

 504 

 567 

 630 



36 



2 



72 



3 



108 



4 



142 



5 . 



180 



6 



216 



7 



252 



8 . . . 



284 



9 



324 



10 . 



360 







As indicated the table refers to 3-inch fingerlings only. To find 

 the number of 1, 2, 4, or 6-inch fish, multiply by one of the 

 following factors : 



Size in inches 1 2 3 4 6 



Factor 12 1.7 1 0.75 0.6 



This is based upon an expected mortality as follows : 



Size 1 2 3 4 6 



Mortality 95% 65% 40% 20% 0% 



The table covers stream widths up to 10 feet. Values for wider 

 streams up to 16 feet, may be determined by multiplying that 

 given for a stream 1 foot wide, by the width of the stream in 

 question. 



