River Resource Management in the Grand Canyon (1996) / Chapter Skim
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7 RECREATION AND NONUSE VALUES
7 RECREATION AND NONUSE VALUES
Pages 118-136
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From page 118... ...
It also explains the concept of nonuse values, their relevance to dam operations, and the results of nonuse value studies. Chapter 9 summarizes and evaluates GCES work on the economics of power generation at Glen Canyon Dam.
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From page 119... ...
More recently, the National Oceanic and Atmospheric Administration convened a blue-ribbon panel that evaluated the validity of methods for measuring nonuse values and developed guidelines for measuring nonuse values in natural resource damage assessment (NOM, 1993~. In addition, several federal agencies are writing administrative rules for the measurement and application of nonuse values to public policy processes.
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From page 120... ...
To neglect total values in favor of more narrowly defined use values would be to leave a major gap in the economic studies under GCES and in the Glen Canyon Dam EIS. This would be unjustifiable given that nonuse values can be estimated.
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From page 121... ...
involving anglers and boaters determined that the value of angling and white-water boating is affected by river stage and daily fluctuations but that day rafters are not particularly sensitive to these aspects of dam operations. Consequently, the economic effects of operational alternatives on day rafters are negligible; Fishing in Glen Canyon The Glen Canyon trout fishery is a by-product of Glen Canyon Dam.
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From page 122... ...
Commercial river companies are not allowed to offer trips that are primarily for fishing in Grand Canyon, even though fishing is allowed as an incidental activity on river trips. Day Rafting In 1991 more than 33,000 visitors took half-day tours of the Glen Canyon reach.
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From page 123... ...
Of the attributes listed by at least 1 5 percent of all respondents, four are potentially affected by dam operations: time for layovers and stops at specific sites, rapids, wilderness experience, and not feeling crowded. Rivertrips make planned stops at attractions located along the tributaries and side canyons and also include scheduled short or extended day hikes.
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From page 124... ...
(1987) asked white-water boaters and commercial whitewater guides to provide reports on the quality of their Grand Canyon whitewater trips.
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From page 125... ...
No separate economic value study was conducted for commercial trips launched by the Hualapai Tribe at Diamond Creek. The Navajo Reservation borders portions of Glen Canyon National Recreation Area and Grand Canyon National Park.
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From page 126... ...
are discussed in the EIS under the three alternatives that include such flows. Background on Economic Methods Used Two economic measures-the net economic value of recreation and the regional economic impact of recreation-were used in GOES to estimate the national and regional economic effects of proposed alternatives for dam operations.
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From page 127... ...
For example, both the Interim Low Fluctuating Flow and Existing Monthly Volume Steady Flow Alternatives have the same average monthly flows. There would be nofluctuations underthe Existing MonthlyVolume Steady Flow Alternative and no fluctuations over 10,000 cfs under the Interim Low Fluctuating Flow Alternative.
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From page 128... ...
Under the EIS fluctuating flow alternatives, including no action, trout were assumed to be less likely to reproduce and survive until they reach trophy size. Underthe Moderate, Modifiecl Low, and Interim Low Fluctuating Flow Alternatives, the potential for catching large fish was assumed to increase, and therefore fishing trip quality also would have the potential to increase.
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From page 129... ...
Because the alternatives do not differ significantly for day rafters, the economic effects of changing operations are estimated as zero. Economic Effects of Dam Operations on White-Water Boating White-water boaters prefer moderate fluctuations and steady flows because of their influence on itinerary, character of rapids, wilderness values,
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From page 130... ...
Under the fluctuating flow alternatives, mooring would be fair to good at 64 percent of camping beaches; under steady flow, 92 percent would be fair to good. Economic Impacts of Dam Operations on Native American Tribes A number of commercial and private white-water boating trips launch from Diamond Creek on the Hualapai Reservation.
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From page 131... ...
Preliminary studies indicated that quantification of nonuse values associated with Glen Canyon Dam operations is feasible. Participants were able to distinguish effects on the river corridor from effects on the Grand Canyon in general and indicated that they, as nonusers, would be affected by changes in dam operations.
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From page 132... ...
and were discounted using the federal discount rate of 8.5 percent)
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From page 133... ...
Recreation and Nonuse Values 133
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From page 134... ...
marketing area. The national nonuse values, however, are about 30 times larger than the foregone power revenues for seasonally adjusted steady flows.
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From page 135... ...
1987. Effect of flows in the Colorado River on reported and observed boating accidents in Grand Canyon, Glen Canyon Environmental Studies Technical Report.
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From page 136... ...
1992. (1993 in EISJ River Campsites in Grand Canyon National Park: Inventories and Effects of Discharge on Campsite Size and Availability.
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