40 



BULLETIN OF THE BTTREAU OF FISHERIES. 



In the following' table are given the temperatures of the Kern River m and ahoui 

 Kern Lalve, which is but a widened portion of the river caused by a partial choking 

 of the stream in the recent past. The temperatures were taken in the latter part ol 

 July. As can be seen, they range from .5^.5" to 61° F. Naturally the morning 

 temperatures are lower than those of the later parts of the day, as also are those ol 

 the lower depths of the water. The records of the maximum and minimum tempera 

 tures at our camp near the shore line of the lake show that the air temperature durinL: 

 the night was even a little lower than the lowest temperature of the water. wliiU 

 during the day it rose far above it, liciiig. indeed, a high summer lieut. 



Table 1. — Water temperatures at Kern Lake. 



57.75 

 56.0 

 5.5.0 

 54.75 

 61.0 



52.5 I 



iif outlet; depth, 12 feet. 



The temperature of the air at Kern Lake camp was as follows: July 1!), mininmm, 

 50.25"^, iiiii.xiiiium, SS*"^; July 20, minimum, 51.75°, maximum, 86.5'; July 21, mini- 

 mum, 5:',.."i . niaxiinam, 81.5°. 



About 2 miles al)ove Kern .Lake, nearlv opposite to one another, there empty 

 into the river two tributaries. The smaller one on the west is Coyote Creek, on the 

 east is Volcano Creek. Coyote Creek rises mainly in the Coyote meadow, from 

 which re<;i()ii it pass, s by ;i rapid descent to the Kern. In table ii the temperatures 

 noted shew the low ilcur.'' of 43.5^ taken at the largest spring at its source. From 

 this the tcniix raturc rises as the stream descends to about the temperature of the 

 Kern near the mouth of the creek. The constant addition of cold water from small 

 tributaries and springs prevents a greater rise of temperature. 



Table II. — Coyote Creek temperatures. 



In table iii are given the temperatures of Volcano Creek taken from points 

 ■xtending from one-half mile above the mouth of the creek to the portion which lies 



