Z01647740                       USGS 
H01647740       3906090770712002424031SW0207001012.50          270              
N01647740       NORTH BRANCH ROCK CREEK NEAR ROCKVILLE, MD
Y01647740       
301647740       19680124   86.06               2.37   2              2.53
301647740       19690810   76.06               2.20   2              3.32
301647740       19700415   93.06               2.58   2              3.79
301647740       19710209    1006               2.92   2              4.01
301647740       19720622    4206               6.10   2              9.63
301647740       19721209   89.06               2.53   2              4.06
301647740       19740331   93.06               2.64   2              3.23
301647740       19750926    2986               5.75   2              7.63
301647740       19760101    1236               3.71   2              3.71
301647740       19770408   27.06               1.60   2              1.74