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IV-6 m m I I I I I I I I I I I I I I I I I A geologic pl'oblem is present on the left abutment which is largely composed ,of permeable gravel. While it appears that a blanket can be used to cut seepage through the gravel, thorough exploration will be necessary prior to design of a high dam at the site. Miller Creek Reservoir Miller Creek Reservoir would be an off-ch,~nnel dam and reservoir located on Miller Creek approximately two miles above its confluence with the White River. The (am would be 300 feet high iind have a crest length of 1360 feet. The tctal reservoir capacity of 63,200 acre-feet would include 55,000 acre-feet of active storage. To fill the reservoir, a diversion dam on the North Fork of the White River below Ute Creek would be required. A gravity pipeline would follow the river and highway to Miller Creek and then up the creek to the dam. The irrigation and coal delivery system for Miller Creek does not require the tunnel, but it would use a pipeline generally following the creek to the confluence with the White River. An inverted sipho~ would carry the water under the river and continue downstream to a poi~t approximately opposite the Veatch Gulch confluence, where a pumping plant would be located on t1e west side of Oak Ridge. The pumping plant would raise the water 250 fe,et into a pipeline which would supply the irrigated lands and the coal property. The total length of pipeline required would be approximately eight miles. The rock in the area is Weber and/or Maroon Formations of Pennsylvanian and Permian age. The rock is red sandstones and shales, which are very convoluted. It is probable that evaporites from the Eagle Valley Evaporite Formation are present, causing some of the convolutions. On the right side of the valley, there are a number of 1 ands 1 i des or slumps and a I so some apparent faulting. There are anomalous dips across the valley. This site would require considerable geologic exploration before a definitive statement could be made as to its utility.