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• <br />the lower 15,000 feet C2.84 miles) of the basin and the wider sarewfat <br />elongated "upper" basin. The basin is shaped like a short "T" with the <br />northeast trending lower strip of the basin forming the stalk and the <br />"fat" northwest-southeast trending "upper" basin forming the top. The <br />basin covers about 10.9 square mites excluding the SSB and NSB. <br />Newlin Creek begins at about 9,100 feet !n Locke Park high In the <br />Wet lbuntalns and flaws southeasterly In a deep narrow valley for about <br />3 miles then turns northeasterly for about 2 miles to the southern <br />boundary of the permit area. At this point Newlin Creek exits the Wet <br />hbtmtains and flaws out onto the dissected pediment surface and <br />continues rortheasterly across the permit area and beyond to its <br />confluence with the SSB and NSB. <br />• Newlin Creek is 8.05 miles In length to the confluence with the SSB <br />with an average total gradient to that point of 403 feet per mile. In <br />the steep-sided valley above the south boundary of the permit area <br />New11n Creek averages a gradient of 476 feet per mile with a maximum <br />gradient for a 0.91 mile stretch of 770 feet per mile. Fran the south <br />boundary of the permit Brea across the permit area and pediment wrface <br />to confluence wish the SSB the gradient is 268 feet per mile. <br />Newlin Creek Valley Across Pennlt Area <br />Newlin Creek flaws in a shallow valley across the permit area. The <br />valley floor ranges fran 150 feet to 500 feet wide, and averages about <br />350 feet wide. The stream bed occupies a shallow channel In the valley <br />across the permit area, and is generally less than 5 feet deep and 10 <br />feet wide. The valley floor lies 20 to 35 feet below the pediment <br />surfaces on either side. <br />• The valley floor Is underlain by allwtum comprised of gravel, <br />cobbles, and boulders in a silty sand matrix. This allwlum Is up to at <br />~ least 20 feet deep but probably averages 10 to 15 feet deep. There are <br />ra extensive soils developed on the allwiun. Soils found are generally <br />very thin and irregulr patches of silty sand. <br />