1933 ANNUAL REPORT, 1932 13 



2. Closure of Water Areas 



The importance, definition, and purpose of sanctuaries for fish, both game 

 and commercial varieties, were pointed out in the Department's latest annual 

 report and it is unnecessary to repeat here. 



The work that the Department is doing in this connection may be found 

 by referring to page 18 on which a list of closed waters and the conditions 

 governing closure are given. 



Special studies in this cojinection consisted of the following: (1) Possibilities 

 of augmenting the supply of small-mouthed black bass in Lake Penage by the 

 utilization of neighbouring lakes; (2) A further study of Deep Bay, Sparrow 

 lake, in connection with closure for sanctuary purposes. 



3. Pollution 



Investigations in connection with pollution of waters by sewage and trade 

 wastes were carried out in the following locations: Township of Tisdale, Cochrane 

 district; Trent river and Bay of Quinte (Northumberland and Hastings); Grand 

 river, Brantford; Thames river, Chatham and Wallaceburg. 



Measures have been suggested for controlling pollution in these areas and 

 in most instances we find that the recommendations are being faithfully tried 

 out. This is particularly true in the case of effluents from sugar-beet plants, 

 which are especially difficult to control. 



4. Sites for Hatcheries and Rearing Stations 



During the year a study was made of a suggested site for bass ponds at 

 Marmora. Ponds for rearing brown trout and large-mouthed black bass on the 

 Government grounds of the Guelph Reformatory were also inspected. A spring 

 creek at Haileybury for the establishment of a trout rearing station was investi- 

 gated. 



A few requests came from individuals desirous of developing streams and 

 ponds on their own property as a private venture. These have asked for advice, 

 which has been given gratis. On the other hand, if a survey was made, expenses 

 covering the same were met by the individual. There is growing interest in the 

 possibilities of developing ponds and streams along fish cultural lines. 



5. Operations of Commercial Nets 



Studies in connection with the operation on an experimental basis of trap 

 nets in Lake Huron and the operation of gill nets in Kenogamissi and adjacent 

 waters in the vicinity of Timmins were undertaken. 



6. Water Levels 



An investigation was made in connection with water levels on Loon lake, 

 Lennox and Addington, township of Anglesea, and recommendations were 

 suggested regarding the repair and operation of the dam at its outlet, which 

 controls the water levels of the lake and the Skootemata river. 



