Z11459820                       USGS 
H11459820       3758561223024000606041SW180500020.16                            
N11459820       IRWIN C TRIB NO 2 A SAN RAFAEL CA
Y11459820       
311459820       19730118   21.0               52.66                      
311459820       19731117   15.0               51.56                      
311459820       19750321   19.0               52.27