Z50074000                       USGS 
H50074000       1812570654351007272103SW210100054.99           59.1             
N50074000       RIO SANTIAGO AT NAGUABO, PR
Y50074000       
350074000       19651224                      11.54                      
350074000       1967        5204Bm                                       
350074000       19680802    850                9.48                      
350074000       19690521   93002              16.02                      
350074000       19700827  140002              18.00   5                  
350074000       19710122   27002              10.39                      
350074000       19720922   1800               10.73                      
350074000       19730815   2100               11.34                      
350074000       19740306   2000               11.23                      
350074000       19750916   7500               16.26                      
350074000       19751201    900                9.59                      
350074000       19770906    520                8.88                      
350074000       19780418   7590               16.37                      
350074000       19790831   7300               16.07                      
350074000       19800514   2200               11.55                      
350074000       19810416   1400               10.38                      
350074000       19811214   2400               11.69