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<br />HYDRO~TR1AD. LTD.
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<br />FIGURE m-12
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<br />DRAINAGE AREA (sq. ml.l
<br />
<br />The MEAN curve is a least-squares
<br />determination. The UPPER ENVELOPE
<br />is 1.5 stand~rd deviations repre-
<br />senting 93.3% confidence limit.
<br />
<br />GORE CREEK FLOOD PLAIN
<br />SNOWMELT DISCHARGES
<br />500 YEAR
<br />
<br />
<br />.
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<br />IV. CHANNEL FLO\lCHAAACTERISTICSAND FLOOOING
<br />
<br />Channel Character
<br />The characteristics of Gore Creek vary from steep. relatively
<br />straight and rough in the reaches above the confluence of the Gore
<br />and Black Gore Creeks to shallow and slopes with meanders in the
<br />valley meadows then to boulder-strewn. incised channel from west of
<br />Vail to the confluence with the Eagle River. Figures IV-I through
<br />IV-12 show channel characteristics from West Vail up to the con-
<br />fluence of Gore and Black Gore Creeks. The eastern portions of the
<br />
<br />valley receive direct sunlight most of the year. However, some of
<br />the more incised sections are shadowed much of the time, which is
<br />conducive to ice jamming in these narrow, cooler sections.
<br />Channel surface roughness (used for flow friction computations)
<br />varies from n ~ .03 in the meadows to n ~ .08 for shallow flows in
<br />
<br />the bouldered portions of Gore Creek. The slopes within the channel
<br />
<br />(v~rti(~l drop divi(le(l by the hori70nt~.l M.ln ~nd l'xpressed as a per-
<br />cent) vary from four percent to seven percent above the confluence
<br />
<br />of Gore and Black Gore Creeks, then O.5~ to 3% in the meadows along
<br />the golf course and then 0.2% to 1.5% near the Eagle River.
<br />Elevations of the valley and channel have been determined in
<br />critical locations from field surveys and otherwise from both field
<br />
<br />surveys and the two foot interval orthographic contour maps prepared
<br />for the Town of Vall by Falcon Air Maps.
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