Biological Survey — Genesee River 23 



perch will fiiul conditions favorable for gTOwth. It is possible 

 that the lake trout also will succeed, however, before introducing: 

 them, the conditions as regards temi)erature, gaseous content and 

 salinity should be carefully determined after the lake is an accom- 

 plished fact. 



The Caneadea ])roject calls for a smaller lake containing some 

 deep water near the lower end but grading into extensive areas 

 of unstable shoals in the upper region. The variation in lake 

 level may even be greater here than in the first project. Were 

 a somewhat constant level to be maintained the conditions would 

 undoubtedly be very favorable for rainbow trout. The deep w^ater 

 in the lower end would tend to prevent further downstream move- 

 ment of trout while the two tributary streams near the head or 

 the lake, Rush and Caneada creeks, would provide spawning 

 areas for adults and adequate forage grounds for the smaller fish. 



The lower Caneadea creek is now well stocked with small- 

 mouthed bass and it is ])robable that this species will be the prin- 

 cipal one to consider in future stocking. 



Streams Not to Be Stocked 



Sti'eams in which stocking is not advised fall into four 

 categories : 



1. Streams which become dry or intermittent during the sum- 

 mer months : Small runs, some of which dry up completely ; 

 others normally a little larger which become nothing more than a 

 series of disconnected pools. 



2. Streams too warm for trout and too small for bass : Unsuit- 

 able for any fishes except the mixed population of minnows and 

 suckers, which they usually contain in great abundance. 



3. Cold brooklets too small for angling and tributary to streams 

 not suitable for trout: Ordinarily one stocks a small spring run 

 with the ex])ectation that the trout as they become of legal size 

 will run down into some larger stream. If the larger stream is not 

 suitable there is little reason for stocking the small tributary. 



4. Streams too badly ])olluted : Refuse from oil wells ])Ouring 

 into npi)er Knight creek (Maj) 5) is resi)oiisible for the disapi)ear- 

 ance of nearly all food organisms and all fishes except an occa- 

 sional minnow. 



Wolf creek (Map 3), polluted by salt, is beyond hope of estab- 

 lishing any fresh water food fish. Were it not for this the upper 

 section, at least, would be suitable for trout. 



Conesus lake outlet is badly polluted by milk waste. If this were 

 projierly taken care of the stream would undoubtedly harboi 

 large-mouthed bass, bluegill sunfish and bullheads. 



Number of Fish to Be Planted 



In the present state of our knowledge, it is probably not pos 

 sible to determine with any degree of accuracy the number of fish 

 to be ])lante(l in a stream in order to utilize fully its capacity. 



