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<br />-4- <br /> <br />For the purposes of this hydrolog'c analysis, the Gore Creek basin <br />is divided into 27 sub-bas'ins '1lit,l catchment areas from 0.6 to 9 square <br />lliles. These 27 catchments have been (j'iven an additional identifier <br />which helps locate thE' catchment alonel Gore Creek as \'Iell as identifyincj <br />its location with respect to Gore Creek (see Table I-I and Plate I)_ <br />Sub-basins B-1 and B-2 drain into the upper Black Lake and Black <br />Lake No_ 2, respectively. Sub-basins N-l through N-16 are located on <br />the north side of Gore Creek and have a southerly, sunny exposure. Sub- <br />basins S-1 through S-9 are on the south side of Gore Creek_ <br />E. Genera -\ ~~aturL.of..Elood 1.i1.g_ <br />The Gore Creek watershed is SUbjected to both rainfa-Il and snowmelt <br />flooding. The nature of the disc{)oTge,; during the spring snOlvmelt is a <br />typical diurnal fluctuation with a duration of high level discharges <br />(50;~ of peak discharge) of several day,; to tlvO ~Jeeks. <br />Conversely, rainfall flooding which may occur for approximately one <br />hour wi 11 be 1 oca 1 i zed and result from a thunderstorm centered over one <br />or hlo of the sub-bas'ins. The flood h.iZard due to ra-infan as compared <br />to the snowmelt fl ood'j ng is small on 'S 1e ma in stem of Gore Creek but may <br />well be equal to or greater than sno\\'m2lt flooding for basins less than <br />ten square miles in size, <br />The following sections provide adjitional detailed preciaitation <br />and streamflow data, as well as geology, soi Is and vegetation data. <br />These data can be used in determining the storm drainage runoff (excess <br />precipita.tion) . <br />