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<br />~ , <br />. <br /> <br />.r <br /> <br />deep as 800 ft have occupied the Salt Lake area twice in the past 150,000 years. Through <br />these alluvial deposits the river has cut a channel which is now confined by canyon walls <br />ranging from 50 to 100 ft high (Photo 1). At the mouth of this canyon (the fan apex) a <br />debris basin has been constructed with the concrete embankment and a spillway that <br />discharges on~o _Barnard Drive (Photo 2). <br /> <br />~It'l-~-.JI'; <br />~~~- <br />~~' <br />F_:, ~, . j:.,m <br /> <br />Photo 1. Upstream View of the Watershed from the Canyon Mouth Before the Creek <br />Discharges into the Debris Basin, Note the steep hillside on photo right. <br /> <br /> <br />.' <br /> <br /> <br />- -.~ -...."..~~---"'- <br /> <br />fa- <br /> <br />.~ <br />.~-,~: <" <br />~.......~- <br /> <br />ti :1-.. <br />'~'.~.... <br />~'''l.--'' ,c~.... <br />.,....~\ --- -~ , <br />. '_ J. ... _.... . '/ #: <br />--- <br /> <br />. <br />, <br /> <br />#- <br /> <br />/~ . <br /> <br />Photo 2. Downstream View of the Debris Basin and Spillway. Photo taken where the <br />Creek discharges into the Basin (See Photo 1). <br /> <br />4 <br />