RESERVOIRS AND PONDS, 09 



ured in inches. This gate and weir control the flow of 

 water. On one side of the dam a spillway over solid 



FIG. 17. BEAR VALT,EY DAM. 



rock is provided for the overflow of the surplus water. 

 This is some four feet lower than the crest of the dam 

 and affords ample discharge for the superabundant water. 



