Biological Survey — Oswego Watershed 



59 



both good streams for rainbow trout and from these fish descend 

 into the lake and furnish sport for the fishermen. Ciscoes are 

 also found in the lake which supplement the trout food. 

 Whitefish is scarce but could be increased in numbers by 

 proper planting. In this lake more lake trout are taken in a 

 single week than are taken in Canandaigua, Owasco or Skaneateles 

 in an entire season by the line fishermen. Thus it is 

 evident that, in spite of the numbers of trout taken, the supply 

 can be maintained by proper planting, and protection of the 

 spawning grounds. The causes which have maintained the supply 

 of trout in Keuka lake in spite of the abundance of fishermen are 

 a combination of the most careful planting which has been practised 

 in any of the lakes, the guarding of the spawning beds, which was 

 undertaken for several years by the Seth Green Club, the greater 

 abundance of favorable spawning beds in the lake off the mouths 

 of the little tributaries which run down from the hills, by the 

 absence of lampreys and burbots, and the presence of a large 

 expanse of lake bottom lying between 50 and 175 feet in depth. 



Seneca lake: Here is an abundance of alewives and, unfortu- 

 nately, also of lampreys, but no burbots. The eel is fast disap- 

 pearing from this lake. The whitefish has become scarce, perhaps 

 extinct. The cisco exists in reduced numbers. The pike-perch, 

 although it has been planted in recent years, is scarce and the 

 pickerel is practically confined to the head of the lake and Dresden 



Lake trout showing lamprey marks. From Seneca lake 



