Report of the Department of Lands and Forests for fiscal year ending March 31, 1950 



Page 44 



Pollution 



Investigations of the following lakes and streams were made to evaluate the 

 effects of domestic and industrial wastes on fisheries, and to indicate corrective control 

 measures which would be beneficial in obtaining desirable water quality objectives. 



Period: April 1, 1949, to March 



31, 1950. 

 Location 



Balmer Creek at Red Lake. 

 Beardmore Creek at Acton. 

 Burnt River at Kinmount. 

 Credit River at Port Credit. 

 Duffin's Creek at Ajax. 

 Effingham Stream in Welland 



County. 



Gingrich Creek in Waterloo 



County. 

 Humber River at Woodbridge. 

 Lake Nipigon in Orient Bay. 

 Leskard in Durham County. 

 Lynn River at Simcoe. 

 McGregor's Creek at Chatham. 

 Moira River at Corbyville. 

 Muskoka River at Baysville. 

 Napanee River at Strathcona. 



Lake Ontario at Mimico. 

 Lake Ontario at Port Union. 

 Bay of Quinte at Bath. 

 Spanish River at Espanola. 

 Sydenham River at Owen 



Sound. 

 Thames River at Ingersoll. 

 Thames River at Chatham. 

 Toronto Harbour. 

 Trent River at Trenton. 

 Turkey Creek at Petrolia. 



Table No. 26 



COMPARATIVE STATEMENT OF THE YIELD OF THE FISHERIES 



OF ONTARIO BY LAKE 



Table No. 27 



COMPARATIVE STATEMENT OF THE YIELD OF THE FISHERIES 



OF ONTARIO 



1948 1949 



Carp.. 



Catfish and Bullheads 



Caviare 



Eels 



Goldeye 



Herring 



Mixed and Coarse 



Perch 



Pickerel (Blue) 



Pickerel (Yellow).. 



Pike 



Saugers 



Sturgeon 



Lake Trout 



Tullibee .... 

 Whitefish... 



Total... 



Net Increase 



INCREASE 

 POUNDS 



612,359 



907,800 



2,348 



41,974 



28,232 



2,520,206 



3,499,205 



2,257,086 



5,784,140 



3,088,595 



928,377 



163,921 



185, 2S7 



1,978,295 



404,030 



6,530,936 



28,941,791 



646,184 



902,132 



1,850 



47,861 



49,800 



2,136,951 



3,716,650 



2,698,438 



9,830,912 



3,235,222 



1,027,460 



190,633 



183,814 



1,891,964 



438,174 



7,063,316 



34,061,361 



33,825 



5,887 

 21,568 



217,445 



441,352 



4,046,772 



146,627 



99,083 



26,712 



34,144 

 523,380 



DECREASE 

 POUNDS 



5.506,705 

 5119,570 



5,668 

 498 



383,255 



1,473 

 86,331 



477,225 



