Z15208000                       USGS 
H15208000       6139411451102000202261SW19020102421            1500             
N15208000       TONSINA R AT TONSINA AK
Y15208000       
315208000       19500618   5260                5.97   3                  
315208000       19510906   5170                5.93   3                  
315208000       19520731   5300                5.99   3                  
315208000       19530627   7240                6.60   3                  
315208000       19540803   4880                5.34   3                  
315208000       19560703   4360                5.34  23              5.81
315208000       19570608   7910                7.00   3                  
315208000       19580610   7260                5.15   3                  
315208000       19590618   5800                4.30   3                  
315208000       19600913   5380                4.15   3                  
315208000       19610805   6720                4.62   3                  
315208000       19620617   8490                4.91   3                  
315208000       19630712   5150                3.85   3                  
315208000       19640617   5060                4.05  23              4.74
315208000       19650714   3650                3.41   3                  
315208000       19660612   4030                3.60   3                  
315208000       19670613   3030                3.09   3                  
315208000       19680616   4400                3.91   3                  
315208000       19690617   2860                2.99   3                  
315208000       19700731   3020                3.16   3                  
315208000       19710716   4750                4.14   3                  
315208000       19720617   3900                3.70   3                  
315208000       19730619   3640                3.85   3                  
315208000       19740831   2780               20.40                      
315208000       19750714   5030               21.49                      
315208000       19760630   3210               20.78                      
315208000       19770714   5680               21.75                      
315208000       19780806   2510               20.22                      
315208000       19790707   2850               20.45                      
315208000       19800612   4930               21.45                      
315208000       19810809   5520               21.69                      
315208000       19820629   3440               20.72                      
315208000       19950922   70007              22.13    1962              
315208000       20061009  1400027             24.30