THE REPORT UPON 



No. 9 



In studying the various lakes and streams standardized methods of procedure 

 have been employed. Lake and stream cards illustrated on pages six, seven, 

 eight and nine, indicate in condensed form the data obtained. These methods 

 have been compared with ones in vogue in certain states of the United States. 

 The methods are so designed that the various waters may be compared physic- 

 ally, chemically and biologically. In this way a fund of information is obtained 

 that is invaluable and forms a comprehensive basis for restocking. The informa- 

 tion must be obtained as quickly as possible and at the same time be consistent 

 with accuracy. 



As pointed out in previous annual reports, the purpose of biological surveys 

 is to gain a knowledge of the fish best suited to the environment; the number 

 of fish which should be planted according to the conditions of food and shelter; 

 the most satisfactory places to plant the fish ; the most satisfactory period to 

 plant fish of different sizes and ages. The latter depends on the food habits of 

 the fish. The available food supply is fundamentally important and must be 

 studied as carefully and as extensively as possible. 



DEPARTMENT OF GAME & FISHERIES STREAM CARD 



NAME 



SYSTETM 

 MAPS 



TOWNSHIP 



CONCESSION 



INVESTIGATOR 



MIDDLE PART 



VOLUME OF FLOW 



VELOCITY OF FLOW 



VEGETATION, MARGINAL 



VEGETATION, SUBMERGED 



WATER. COLOUR 



WATETi, TURBIDITY 



WATER, TEMPERATURE 



AIR, TEMPERATURE 



DISSOLVED OXYGEN 



NATURAL FOOD 



