Z09306033 USGS H09306033 3947071081233000808103SW140500061.22 6843.00 N09306033 SORGHUM GULCH NEAR RIO BLANCO, CO. Y09306033 309306033 1974 0.00Bm 309306033 19750709 7.00 1.71 309306033 19760718 1.10 1.24 309306033 19780801 1.90 1.36 309306033 1979 0.00Bm 309306033 19800701 1.40 1.29 309306033 19810717 1.40 1.29