BROOKS 

 RIVER 



UP-A-TREE CR. 



ONE SHOT CR. 



HEADWATER 

 CREEK 



Figure 33.--Sounding transects of Brooks Lake made in 1957 with portable echo sounder. 



CONTOUR INTERVAL 40 FEET 



Figure 34.--Bottom contour map of Brooks Lake. 



readings October 3 in figure 35.) For this 

 reason, actual temperatures at deeper points 

 were slightly lower than indicated. 



Figure 35 shows the temperature profiles 

 at each station for successive dates of sam- 

 pling. Because temperatures were recorded 

 only for selected depths, and no continuous 

 temperature profiles were obtained, little was 



learned on presence of or characteristics of 

 the thermocline. The range of temperatures 

 from surface to bottom was quite small, 

 indicating that thermal stratification was not 

 pronounced; the maximum range was 17° F.in 

 65 m. on August 23. 



From July 24 through August 23, surface 

 temperatures at station II were less than at I 



51 



