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<br />depth of 1 loodl.~tprs I n MOst instances arid f IOri cond i tib"s may ~pp(ler <br />dBceptlvely safe. Overbank 110.'5 ere "~reclally dan~erws urstr"",,, 01 <br />r~eler"nce 1'0 I nt J3 .~ here the f lood n I ~ I n is re I at iV'll V ""rro< and tho <br />velocities dre hiah. <br /> <br />Rate of rise-and duration of flooding- Floods In the <br />study roach can rp5ult from storm ral"la II alone or In corm ination with <br />sncwmelt runoH In the sprl"rl or early SU"'ller. P8a"inq t("l€S for II""s <br />01 the Cache la Poudre River at Fort Collins, cdusedby heavy rcinla II <br />runoff, ,lre approxiOKltely 6 hours. Dur~tion of flooding from t~is type <br />of runoff wou Id be near I y JQ hours. '~h"" sr'\O>Im"lt ru"off Is cortl I ned <br />with rainhll runoff the duratIon of flooding \<oold ~(l considerably qr"Bter. <br /> <br />" <br />