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<br /> <br />a. Buckhorn dimensionless graph; :.. This graph was derived from <br /> <br />flood runoff from a small foothill area caused by an intense <br /> <br />thunderstorm, May 30, 1948, over a tributary stream to <br /> <br />Buckhorn Creek. Discharges were recorded at the gage <br /> <br />Buckhorn Creek near Masonville, Colorado, which was located <br /> <br /> <br />at the downstream boundary of subarea MU-ll (see Plate 6 <br /> <br /> <br />attached to text). The tributary enters Buckhorn Creek from <br /> <br /> <br />the north just upstream from the gage, This dimensionless <br /> <br /> <br />graph represents rapid surfa~e runoff and has been used often <br /> <br /> <br />for derivation of unitgraphs for watersheds having such <br /> <br />runoff characteristics, and particularly foothill-type <br />terrain. It was selected as applicable to mountainous sub- <br /> <br />areas MU-5, South Boulder Creek; MU-6, Boulder Creek; and <br /> <br />those subareas having drainage areas I19t extending westward <br /> <br />to the Continental Divide - MU-l, -3, -4, -7, -9, and -11. <br /> <br />b. Uinta dimensionless graph. - This graph represents surface <br /> <br /> <br />runoff combined with a minor amount of interf1ow. It was <br /> <br /> <br />selected as applicable to the mountainous subareas which <br /> <br />head along the Continental Divide, Hydrographs of runoff <br /> <br />from these watersheds indicate some interf10w contribution <br /> <br /> <br />to storm runoff. The Uinta dimensionless graph was derived <br /> <br /> <br />by analysis of the rainf100d event of September 13, 1939, <br /> <br /> <br />recorded at the stream gage Uinta River near Neola, Utah. <br />That analysis was prepared as an example of dimensionless <br /> <br />5 <br /> <br />",.-..:. <br /> <br />.,...... .:. <br /> <br />..:.... <br /> <br />".-".. <br /> <br />. ~-.. ''''''';. <br /> <br />.- <br /> <br />.. <br />