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hard and is not strongly cemented, yet stands in nearly vertical walls. It is relatively porous, but water will not move rapidly through it owing to the small size of the intergrain voids. This rock is the same formation and comparable to the rock at the Glen Canyon site. The extensive test data on the physical character and behavior of the rock at Glen Canyon are believed applicable to the rock at the Paria River Dam site. The upper part of the reservoir is an erosional valley cut out of the Corral shale and Entrada sandstone. There are no roads in the vicinity of the damsite, and at present access is difficult. No drilling has been done at the damsite, but channel conditions indicate the depth of fill in the stream channel to be from 60 to 100 feet. A detailed foundation exploration program will be required before final designs are prepared. The preliminary studies do not reveal any geologic defects of any consequence at the damsite. The Navajo sandstone is considered competent for the proposed dam. Access facilities and relocation of U.S. Highway 89--The damsite is about 30 miles via U.S. Highway 89 from the nearest town and trucking terminal at Page, Arizona. Construction of about 8.1 miles of road across the relatively flat, but sandy, plateau from the State highway to the damsite would be required. At the damsite, the precipitous nature of the narrow canyon would make roadway construction from the rim to the streambed impracticable. Men and materials could easily be lowered to the work by cableways or hoists, with some use of ladders and stairways, as the dam approaches completion. 26Epson Perfection 4870 Photo, 400 dpi, 8 bit, 14,342,144 byte