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<br />-8- <br /> <br />~......J::. i e 1.9..] n v e sJi.gaJ:.!_':JI:' <br /> <br />Field investigations have shown the ~esidual soils derived frmn the <br /> <br />vorious members of the t1inturn Fomation possess a moderate'ly high infil.. <br /> <br />t~ation rate but the soil mantle is generally shallow (excluding the <br /> <br />Volley floor area which has alluvium rather than residual soils) and <br /> <br />becomes saturated during the spring sno~~elt process. The tundra lanes <br /> <br />aJove timberline (mostly C12ssi~ied as ~ock Outcrop - Cryumbrepts <br /> <br />C~yaquepts) has a 1 a rge percentage of rcck outcrops whi ch obvi ous 1 y ha s d <br /> <br />high runoff potential. The portions of the tundra zone that possess good <br /> <br />solid growth of the lichens and mosses typical of the central Rocky t'10uncain <br /> <br />Tundra zones wi 11 reta ins i gn i f-j cant arncL,nts of water in te11porary storage <br /> <br />and long-tlorm storage for the evapll-trarspi rati on process. <br /> <br />C. GJ^ound Water <br /> <br />The Gore Valley floor 15 gene~olly filled with alluvial soils con- <br /> <br />taining a high percentage of sands, gravels and cobbles. The groundwater <br /> <br />table is usually found at depths near or somewhat above the mean seasonal <br /> <br />stage level for Gore Creek and slopes up~~rd toward the valley walls. <br /> <br />The permeability of these alluvial soi'lsis very h'igh and except for a <br /> <br />f',I'/ very local ized spots mainly nedr or within the golf course, the potenticl <br /> <br />infiltration is not influenced by i' hiqh qroundl'la'cer table, <br /> <br />In the process of establishing the infiltration rates for the various <br /> <br />sllb-basins, a review of an ava'ilable data has been accomplished as well <br /> <br />a~; field reconnaissance I'lork to esta~)lisr' the probable ro,nges of ipfil- <br /> <br />t:"ation that can be expected fat" Slimmer' or fall type rainstorms. The inn <br /> <br />filtration process is not animpor~:antfact()r for snowmelt flood peak analy"i s <br /> <br />since this analysis is based upon strea~flow records and the soil wantle <br /> <br />i~; essentially saturated during the peak snol'ilneH period. <br />