194 American Fisheries Society 



The present paper is a summary of a fish survey made of the 

 Bear Mountain and Harriman Park sections of the Park, mainly 

 from the standpoint of stocking the waters with food and game 

 fish. Mainly practical problems of immediate importance are 

 here considered. The educational-recreational aspects are being 

 given secondary consideration at this time, but are not ignored. 

 Both popular and technical reports are in preparation on the 

 Park fishes. 



The field examinations were made by our party during August, 

 1918, and from June to the middle of July, 1919. At present we 

 are reporting on six ponds or lakes, and on two stream systems. 

 The waters so far examined are mainly those along the Seven 

 Lakes Drive. Other important waters have not been examined 

 at all, because of the lack of time at our disposal. 



These waters present a number of unusual features which 

 complicate the problem of fish culture more than is usually the 

 case. The uses to which the waters of the Park are devoted are 

 relatively more diverse than those of the usual wild waters. 

 Furthermore the newness of the waters, having been formed or 

 enlarged by dams, and their frequent changes of level, introduces 

 uncertain factors which are not usually met with in fish cultural 

 operations, and only time and further study can resolve this 

 influence. The growth of aquatic plants has been changed funda- 

 mentally by these changes of level, and in the future as water 

 plants become established on the new shores, the conditions for 

 feeding and breeding of the fish, and fish food as well, will be 

 materially changed, and the chances are that the mosquito prob- 

 lem will become more serious, because such vegetation offers 

 retreats for mosquito larvae away from the fish, as Dr. J. Percy 

 Moore's studies in the Park have shown. At present the control 

 of the mosquito problem by fish is relatively efficient in most of 

 these waters. 



The plan upon which the present recommendations have been 

 based has been to learn for a particular water of the general inten- 

 tion of the Park officials and then to harmonize our formulations 

 of policy and recommendations with this plan. As the purposes 

 of the Park officials change, these plans must be modified. 



