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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />utilizing existing drainageways as much as possible to transport North Fork <br />water to Juniata Reservoir. <br /> <br />Several optional means of conveyance exist and will be developed as sub- <br />alternatives for comparison purposes. Generally speaking, the following is a <br />reach-by-reach description of the major considerations involved in this <br />alternative and delineated on the aerial photo shown in Figure 3-1. <br /> <br />Reach A - This reach consists of a new North Fork diversion structure and <br />lateral conveyance on a relatively flat grade (2-4%). The reach is <br />approximately 1000 feet in length through rocky terrain with fairly heavy <br />vegetation. This reach tenninates at a natural drainage (normally dry) <br />just upstream of the first crossing of Land's End Road. <br /> <br />Reach B - Following the "upper drainageway" for a distance of 3000 feet at <br />an average slope of 10%, the terrain remai ns rocky and heavily vegetated. <br />This reach involves three crossings of Lands End Road, and terminates upon <br />intersecting a larger water course, also normally dry, referred to as the <br />"main drainageway". <br /> <br />Reach C - While the upper end of the main drainage continues to fall at a <br />10% slope, several changes are encountered whil e progress i ng downward <br />through this 6400 foot reach, namely; <br /> <br />1) the grade eventually flattens to 7%, <br />2) the narrow ravine with steep sides10pes that is characteristic <br />of the upper end widens out, allowing the watercourse to <br />meander, <br /> <br />3-5 <br />