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<br />Tl\BJ,I'; I <br />-~---- <br /> <br />SPRING CREEK TRIBUTAf!Y SOIL ASSOCIATIONS <br />-------------... <br /> <br />Associa~ti()n Name <br />~---_..~-- <br /> <br />Average <br />Hydrologic <br />Group Letter <br />--- <br /> <br />Association <br />Number <br /> <br />174 <br /> <br />Nunn (C) - Dacano (e) - <br />Altvan (B) <br /> <br />C <br /> <br />20 <br /> <br />Ascalon (B) - Platner <br />(C) - Stoneham (B) <br /> <br />B <br /> <br />PRECIPITATION <br /> <br />The primary source of flood-prodGcing runoff in the spring Creek <br />Tributary Basin is the spring ard summer thunderstorm, often ac- <br />companied by hail. The rainfall data aDd distribution used in <br />the development of peak dischargss for Sprinq Creek Tributary were <br />obtained from the National Oceanic and Atmospheric Administration <br />Atlas, Volume III, Colorado (Ref, 1). Six-hour and tI,enty- four <br />hour rainfall depths are compiled in Table II. No aerial adjust- <br />ments were needed since the drainage area is only ;I square miles. <br />9.25 <br /> <br />TAB [Ll_!. <br />SPRING CREEK TRIBUTARY P1HNFALL DATA <br />-~_._---~~--- <br /> <br />Storm Frequency <br /> <br />6-hour _ (inches~L <br /> <br />.?4-1~: (inches) <br /> <br />10-Year <br /> <br />IOO-Year <br /> <br />:3.2 <br /> <br />;;-:r ;<;.~ <br />)...4-" 4-.0 <br /> <br />:2 .1 <br /> <br />-')- <br />,. <br /> <br />R ~:VI sifD A (0 (12 7178 <br />C--r11( <br />