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<br />CONTENTS - Continued
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<br />Figure
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<br />Page
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<br />3-6 Seasonal (October through May) percent of normal precipitation
<br />(water equivalent) and snowfall for the period of record. . . . . . . . . . . . . . . . . . 24
<br />3-7 Seasonal (October through May) percent of normal precipitation vs.
<br />number of days with precipitation of 0.1 inches or greater at the
<br />Blowhard Mountain radar site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , 24
<br />3-8 Comparison of average monthly precipitation at Cedar City, Blowhard Mountain
<br />radar site, and Hatch, UT, located at elevations of 5700, 10,700, and
<br />6900 feet above sea level, respectively. , , . . . . . . . . . . . . . . . . . , . . . . . . . . . 25
<br />3-9 Average April 1 snowpack water equivalent vs. elevation in the
<br />Sevier River Drainage .................,....................... 26
<br />3-10 Average April 1 snowpack water equivalent vs. latitude in the
<br />Sevier River Drainage ......................................... 27
<br />3-11 Frequency distribution of daily snowfall depths (inches) at the Blowhard
<br />
<br />Mountain radar site ...................................,.,.".. 27
<br />
<br />3-12 Average daily precipitation (X1O), snow depth, and temperature at the Blowhard
<br />Mountain radar site for the months October through May. . . . . . . . . . . . . . . , . 28
<br />3-13 Frequency distribution of average temperatures on days with snowfall for
<br />each month, November through April .......,...................,.. 29
<br />3-14 Total yearly runoff in Mammoth Creek at Hatch, UT, for water years 1965
<br />
<br />through 1988 . . . .' . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
<br />
<br />3-15 Percent of normal water year runoff vs. percent of normal snowfall from October
<br />
<br />through May . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . 30
<br />
<br />4-1 Precipitation rate on, and vertically integrated liquid water above, the Wasatch
<br />Plateau on March 5, 1991 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
<br />5-1 Landforms of the Sevier River Drainage in proportional relief
<br />(from Merrill K. Ridd) . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
<br />5-2 Average annual water yield (inches) from runoff in the Sevier River Basin
<br />(from the Hydrologic Atlas of Utah, Utah State University, and
<br />
<br />Utah DWR, 1968) ....... . . . . . . . . . . . , , . . . . . . . . . . , , , . . , . , . . . . .. 43
<br />
<br />5-3 Logarithmic plot of runoff yield vs drainage area for selected gauging stations
<br />in the Sevier River Drainage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . , , 44
<br />6-1 Map of the Wasatch Plateau experimental area ........................" 49
<br />8-1 Augmented monthly flows at Hatch, UT, assuming a 10-percent increase in
<br />snowfall above 8,000 ft m.s.l, for a dry, wet, and normal year ,............ 59
<br />8-2 Augmented flows at Hatch, UT, assuming a lO-percent increase in snowfall above
<br />8,000 ft m.s.l, for water years 1952 through 1971 ...................... 59
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