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Boulder Creek <br />Niwot map <br />Confl. of S. Boulder to E. Edge of map <br />250 <br />0.035 <br />0.4 <br />6.21 <br />2.69 <br />2.31 <br />Stream Lag and Loss <br />for exchange <br />Colorado Division of Water Resources <br />W. edge to E. edge <br />251 <br />0.035 <br />0.3 <br />8.41 <br />06/14/94 <br />4.04 <br />0.25% <br />2.10% <br />Longmont map <br />S edge to Confl. St Vrain Ck. <br />260 <br />0.035 <br />Division 1 District 6 <br />Below Gross Res. on S. Boulder Creek to Boulder Creek through to St. Vrain Creek ending at the confl. with the S. Platte <br />2.12 <br />1.23 <br />0.25% <br />USGS 7.5' map <br />Reach <br />Q <br />n <br />Slope <br />Miles <br />v (mi /hr) <br />Time (hrs.) <br />Loss /mi. <br />% loss <br />from, to <br />ft./i <br />I <br />Longmont map <br />Confl. of Boulder Ck to E. edge of map <br />306 <br />% <br />0.2 <br />this section <br />1.61 <br />S Boulder Creek <br />0.25% <br />0.31% <br />Gowanda map <br />W. edge to E:edge <br />321 <br />0.035 <br />0.1 <br />Eldorado Spgs. map <br />Below Gross Res. to el 6200 <br />341 0.073 <br />2.8 <br />5.08 3.5 <br />1.45 <br />0.15% <br />0.76% <br />Eldorado Spgs. map <br />Be. Ralston Diver Dam to ab. El. Spgs <br />140 0.070 <br />3.8 <br />1.97 2.85 <br />0.69 <br />0.15% <br />0.30% <br />Eldorado Spgs. map <br />Thru El, Spgs to E. edge of map <br />150 0.070 <br />2.2 <br />2.12 2.47 <br />0.86 <br />0.15% <br />0.32% <br />Louisville map <br />W. edge to E. edge <br />100 0.035 <br />1.2 <br />4.55 2.69 <br />1.69 <br />0.25% <br />1.14% <br />Niwot map <br />S. edge to Confl. with Boulder Ck <br />100 0.035 <br />0.8 <br />2.42 2.38 <br />1.02 <br />0.25% <br />0.61% <br />48.1 <br />Total <br />16.1 Total <br />5.7 Total <br />3.1% <br />Boulder Creek <br />Niwot map <br />Confl. of S. Boulder to E. Edge of map <br />250 <br />0.035 <br />0.4 <br />6.21 <br />2.69 <br />2.31 <br />0.25% <br />1.55% <br />Erie map <br />W. edge to E. edge <br />251 <br />0.035 <br />0.3 <br />8.41 <br />2.08 <br />4.04 <br />0.25% <br />2.10% <br />Longmont map <br />S edge to Confl. St Vrain Ck. <br />260 <br />0.035 <br />0.3 <br />2.61 <br />2.12 <br />1.23 <br />0.25% <br />0.65% <br />Total <br />17.2 Total <br />7.6 Total <br />4.3% <br />St Vrain Creek <br />Longmont map <br />Confl. of Boulder Ck to E. edge of map <br />306 <br />0.035 <br />0.2 <br />1.25 <br />1.61 <br />0.78 <br />0.25% <br />0.31% <br />Gowanda map <br />W. edge to E:edge <br />321 <br />0.035 <br />0.1 <br />11.97 <br />1.27 <br />9.4 <br />0.25% <br />2.99% <br />Johnstown map <br />S. edge to E. edge <br />330 <br />0.035 <br />0.2 <br />1.44 <br />1.48 <br />0.97 <br />0.25% <br />0.36% <br />Milliken map <br />W. edge to confl. with S. Platte <br />335 <br />0.035 <br />0.8 <br />0.11 <br />2.27 <br />0.05 <br />0.25% <br />0.03% <br />Total <br />14.8 Total <br />11.2 Total <br />3.7% <br />Total for exchange <br />48.1 <br />24.5 <br />11.1% <br />