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• The channel will be designed for 2,000 cfs, or about four times the current <br />capacity. Base flows in the channel have been estimated at 3 cfs. <br />Alternatives Analysis <br />Three alternatives were considered, which consisted of a No- Action Alternative, a <br />low elevation channel alignment, and the alignment near the high water line. All three <br />alignments are depicted on the attached Figure 2. The channel alignment near the high <br />water line is the preferred alternative, as described below. <br />No- Action Alternative. <br />The Company has expended a total of $384,615 in the last three years in efforts <br />to remove sediment from the channel to allow reservoir releases. Releases are <br />hindered when the storage contents are less than 42% and are significantly impacted <br />when the storage contents are less than 33 %. The lowest feasible drawdown elevation <br />is two feet above the dead -pool, leaving 1,400 acre -feet of otherwise useable diversions <br />as dead pool. <br />Low Elevation Alignment. <br />The low elevation route would be the least expensive alignment with a total <br />length of 22,800 feet. It would also avoid nearly all of the wetland vegetation near the <br />high water line. However, the lower alignment would satisfy only one of the six <br />objectives for the project — facilitate removal of storage contents. The remaining five <br />objectives would be unattainable for the following reasons: <br />• The channel sides would be too low to allow the use of a second outlet works to <br />dry up the channel. Maintenance dredging could not occur until the reservoir <br />level is drawn down considerably. <br />• Wave effects could not be mitigated because insufficient material would be <br />available to construct the breakwater dike. <br />• The sediment channel construction for Bob Creek would not be feasible because <br />of the distance required to move the material to construct its dikes. <br />• Material excavated from the channel would be essentially wasted, would serve <br />no purpose, and could create a re- sedimentation problem with the new channel. <br />Lake Meredith Res. Co. 3/7/03 <br />Feasibility of Outlet Channel Page 4 <br />