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<br />0007.n <br /> <br /> <br /> <br />i <br />l <br /> <br />poill' <br /> <br />Morrow Point Landslide Areas <br />. l.JJndsllde Areas <br /> <br />~ <br />N <br /> <br />o 0.5 1 Miles <br /> <br />Figure 3-Morrow Point Landslide Areas <br /> <br /> <br />( <br /> <br />An area on the north shore of the reservoir 19,000 feet upstream from the dam is known as <br />Landslide Area D. Cracks outlining the slide can be traced along the west and top portions but <br />were only observed intermittently along the east margin. The material has dropped about six feet <br />at the head of the area; a coarse talus deposit occurs at the top of the slide. The elevation at the <br />top is about 8,100 ft. and the average slope is 52 percent. The width of the slide at shoreline is <br />about 1,400 ft. A small slump has occurred in the main mass of the slide adjacent to the <br />shoreline. The main area has sags and depressions. which mark it as an old slide, but fresh <br />cracks observed in 1973 indicate recent movement. In 1973, nine survey poiots were established <br />to measure any future movement (Barnes, 1973). <br /> <br />Landslide Areas A, C and D may move as a result of the reservoir draw down, Draw down <br />criteria was developed by geologists and engineers from Reclamation's Denver Technical <br />Service Center and Grand Junction Western Colorado Area Office to minimize and monitor <br />landslide movement. The criteria recommends survey monitoring of Landslide Area A with <br /> <br />II <br />