Z09132050 USGS H09132050 3857151071618000808051SW1402000494.6 6753.63 N09132050 ANTHRACITE CREEK NEAR SOMERSET, CO. Y09132050 309132050 19770912 38.015 309132050 19780516 16805 5.73 309132050 19790527 42005 7.20 309132050 19800610 19205 6.53 309132050 19810503 11005 3.39