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Last modified
1/25/2010 6:27:24 PM
Creation date
10/4/2006 11:48:20 PM
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Floodplain Documents
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Statewide
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Statewide
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Title
Velocity Profile, Water-Surface Slope, Bed-Material Size for Selected Streams in Colorado
Date
1/1/1984
Prepared For
CWCB
Prepared By
USGS
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />Bed-Material Size <br /> <br />Stream bed-material size was described by constructing particle size- <br />frequency distributions in accordance with standard practice (Benson and <br />Dalrymple, 1967). Particle size-frequency distributions were constructed from <br />short, intermediate, and long diameter data. A typical frequency distribution <br />is shown in figure 7. The results of the particle size-frequency distribu- <br />tions for the short, intermediate, and long diameters are summarized in <br />tables 2, 3, and 4. The tables also indicate what percentage of the particles <br />had the particular diameter oriented vertically or horizontally. For each <br />site, the average Krumbein roundness estimate is given in table 3. <br /> <br /> 100 <br />I <br />I <br />I <br /> w <br /> N <br /> tii 80 <br /> Cl <br /> w <br /> .... <br /> < <br /> (,) <br /> i5 <br /> ~ <br /> z <br /> < <br /> J: 60 <br /> .... <br /> 0:: <br /> w <br /> Z <br /> u: <br /> '" <br /> w <br /> -' <br /> (,) <br /> ~ <br /> < 40 <br /> a. <br /> u.. <br /> 0 <br /> w <br /> Cl <br /> < <br /> .... <br /> Z <br /> w <br /> U <br /> 0:: 20 <br /> w <br /> a. <br />I . <br />, <br />I <br />I 0 0.5 2 <br />I 0.0-5 0.1 <br />I INTERMEDIATE DIAMETER, IN FEET <br /> <br /> <br /> <br /> <br />Figure 7.--Frequency distribution of intermediate diameter bed material, <br />Tenmile Creek below North Fork Tenmile at Frisco. <br /> <br />15 <br />
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