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<br />slopes, lack of trafficability on the crown, and obstruction to <br />patrol vehicles such as fences. In addition, this levee is <br />located on top of a sloughing and erodible steep bank in an area <br />where high velocity flows exit from the Grand Avenue bridge. The <br />bulk of the levee system retains the nature of an emergency levee <br />with the exception of about a 300-foot-long segment at the <br />downstream reach which appears to have an engineered geometry. <br /> <br />SITE J - station 385.6 to 384.4, left bank. This levee has <br />been constructed over a period of years, with the last <br />significant addition in 1984. The levee extends from the Grand <br />Avenue bridge to a high point on Dike Road near the united Sand <br />and Gravel offices. The levee is intended to protect a <br />residential and industrial area and adjacent gravel mining <br />operations (Connected Lakes). There are about 120 structures in <br />the lOa-year flood plain and about 29 additional structures in <br />the 500-year flood plain behind this levee system. This levee <br />was also inspected in 1988 for qualification in the Public <br />Law 84-99 program. The levee did not meet the requirements <br />because segments of the levee have inadequate cross sections and <br />are inaccessible due to barriers and slope instability in several <br />locations due to steepness, erosion, and vegetation. <br /> <br />SITE K - station 384.6 to 384.1, in channel. This levee <br />section is the remnant of a levee enclosing "Reese's Lake" on the <br />left overbank of the river. The lake was washed out in the 1983 <br />flood. The lake occupied an area that had been mined for gravel. <br />Due to constriction of the original main channel adjacent to the <br />lake, the floodwaters eroded the upstream and downstream ends of <br />this levee, converting the lake into the new main channel. The <br />flood elevation was significantly lowered in the area immediately <br />after the rupture of the dike, according to eyewitness accounts. <br />The remnants of the dike separate the new main channel from the <br />old channel, but it also occupies potential conveyance space. <br />The original levee was constructed prior to Federal regulation of <br />discharges in rivers. The Corps has not allowed the <br />reconstruction of the complete dike to its original configuration <br />without a Section 404 permit. To date, no permit to do so has <br />been filed. <br /> <br />SITE L - Station 384.3 to 384.0, left bank. This levee <br />system is connected to high ground on Dike Road at the upstream <br />reach and ends as a spur along the top of bank at the downstream <br />end. The lower 750 feet of this system consists of a spoil <br />levee; the upstream portion appears to have an engineered <br />geometry. The upstream tie-in is still below the 100-year flood <br />elevation. The levee appears to provide some protection to four <br />houses and a sand and gravel mining operation. <br /> <br />SITE M - Station 384.3 to 383.2, right bank. This levee <br />protects the Matthews Industrial Park located on River Road. The <br />ends of the levee are tied to high ground, but the area behind <br /> <br />11 <br />