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Stream Lag and Loss Colorado Division of Water Resources <br />6/17/98 <br />Division 1 district 23 Rock Creek <br />USGS 7.5' map Reach n Stope Miles v (mi/hr) Time (hrs.) Loss/mi. % bss <br />from, to ft. /100 % this section <br />Mt Logan map <br />Headwaters to el. 10250 <br />1.32 <br />0.050 <br />15.6 <br />1.46 <br />2.75 <br />0.53 <br />0.13% <br />0.19% <br />Mt Logan map <br />El. 10250 to S. edge of map <br />1.80 <br />0.050 <br />6.3 <br />1.42 <br />1.96 <br />0.72 <br />0.13% <br />0.18% <br />Observatory Rock map <br />N. edge to el. 9560 <br />2.43 <br />0.050 <br />7.1 <br />0.57 <br />2.13 <br />0.27 <br />0.13% <br />0.07% <br />Observatory Rock map <br />El. 9560 to confl. with Tarryall Ck. <br />2.96 <br />0.040 <br />0 9 <br />11.06 <br />1.28 <br />8.64 <br />0.13% <br />1.44% <br />Total <br />14.5 Total <br />10.2 Total <br />1.9% <br />