212 



IRRIGATION INVESTIGATIONS IN CALIFORNIA. 



The following records are from data furnished by the owners of the wells, and 

 were verified as much as possible bj' direct observation: 



A well one-fourth mile southwest of Kings City was dug in yellow sand, and has 

 water standing at about 40 feet from surface. 



A well west of Kings City in NE. i sec. 13, T. 20 S. , R. 7 E. , dug in shale. Water 

 stands at 127 feet from surface, and is unfit for household use. 



A well on Bui-chards Ranch, 4 miles east of Kings City : 



From 1 foot to 20 feet, gravel, some water; from 20 to 86 feet, gravel and shale; from 86 to 141 

 feet, shale, sand, ami gravel (fossiliferous); from 141 to 165 feet, clean yellow sand, water. 



The elevation of this well is about 60 feet above Kings City. 



A well in Hames Valley, near southeast corner of sec. 9, T. 2-t S., R. 10 E., has 

 water standing at about 130 feet from surface. Well is sunk in gravel. Water is 

 unfit for household purposes. 



No accurate observations of water levels in other wells were made, but in the 

 wells of the Salinas Valle}' and of that portion of the above-mentioned terrace which 

 lies nearest the valley the levels appear to correspond with the water level of the 

 Salinas River. 



CONCLUSIONS. 



(1) For the most part the Salinas Valley in Monterey County is a trough that 

 probably holds a great deal of water. 



(2) The valley in its northern part, from near Doud to some point between Chu- 

 alar and Salinas, is covered with talus washed in from existing mountains. 



(3) Pliocene gravels and sands underlie this talus, though to what extent is 

 uncertain. (Fig. 9.) 



S.W. 



N.C 



About 9 Miles 



Fig. 9.- 



-Probable structure of Salinas Valley on a northeast and southwest line through Chualar. 



structure. 



A, B, observed 



(4) Going southward from Soledad, these Pliocene beds begin to rise from 

 beneath the talus at abovit Riverbank, and a northeast-southwest section through 

 Metz would be about as in fig. 10. 



(5) From east of Kings Cit3^ these beds form to the southward an extensive ter- 

 race, which continues into San Luis Obispo County, and which is probably tributary 

 to the underground water supply of the Salinas Valley. (Fig. 11.) 



A cross section through the teri"ace and Salinas Valley along anj' other line of 

 the same general trend between this section and the county line would show substan- 

 tially the same structure. 



