Figure 10 - Graphic summary of delta tow-net and mean daily 

 delta water temperatures . Bars, representing 

 numbers of fish, follow a geometric scale. The 

 temperature line represents composite mean daily 

 readings based on thermographs located on Sacra- 

 mento River at Walnut Grove, gan Joaquin River at 

 Mossdale and Stockton, Old River at Clifton Court, 

 and Middle River at Tracy Island Bridge. 



36 



