Z11183600                       USGS 
H11183600       3756431220255000606013SW1805000185.2           35.44            
N11183600       WALNUT C A CONCORD CA
Y11183600       
311183600       19690126   6030C              10.75                      
311183600       19700121   5900C              10.65                      
311183600       19701204   2630C               7.17                      
311183600       19720205    488C               4.47                      
311183600       19730227   8800C              14.00                      
311183600       19731201   3670C               8.50                      
311183600       19750321   7870C              12.75                      
311183600       19760229    720C               4.84                      
311183600       19770102   1400C               5.68                      
311183600       19780116   6110C              10.83                      
311183600       19790111   3060C               7.73                      
311183600       19800113   6810C              11.57                      
311183600       19810127    935C               5.14                      
311183600       19820105  13300C              19.10                      
311183600       19830313   8900C              13.89                      
311183600       19831124   3690C               8.21                      
311183600       19841124   6250C              10.98                      
311183600       19860217   8410C              13.35                      
311183600       19870213   4310C               8.89                      
311183600       19871028   3390C               7.93                      
311183600       19881123    836C               5.02                      
311183600       19900216   4480C               9.07                      
311183600       19910304   1350C               5.63                      
311183600       19920212   4730C               9.33                      
311183600       19970122   99707C             15.20