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and the loss of additional free-flowing streams would represent a further recreation loss. In addition, as noted earlier, the value of the benefits is affected by the fact that the recreation needs that would be served by these reservoirs could be provided for, alternatively, by the installation of additional facilities at existing areas--Lake Mead National Recreation, Area Grand Canyon National Park, and Glen Canyon National Recreation Area. Estimated annual recreation benefits, exclusive of hunting and fishing, have been computed by the National Park Service. The estimates of annual visits and benefits for the reservoirs in the Pacific Southwest Water Plan, other than Bridge Canyon and Marble Canyon, are shown below: Orme Maxwell Reservoir-Annual Benefits Activities Visitor Days Value per Day Total General Use 175,000 X $0.52 = $91,000 Boating and Water Skiing 75,000 X .55 = 42,250 Camping 50,000 X .50 = 25,000 $153,250 This averages $0.91 per visitor day. Charleston Reservoir-Annual Benefits Activities Visitor Days Value per Day Total General Use 100,000 X $0.52 = $52,000 Boating and Water Skiing 40,000 X .55 = 22,000 Camping 15,000 X .50 = 7,500 $81,500 This averages $0.82 per visitor day. 7Epson Perfection 4870 Photo, 400 dpi, 8 bit, 16,021,504 byte