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[null,"1.","Record Nr.",null,"UNINA9910965907403321"]
[null,null,"Titolo",null,"River resource management in the Grand Canyon / / Committee to Review the Glen Canyon Environmental Studies, Water Science and Technology Board, Commission on Geosciences, Environment, and Resources, National Research Council"]
[null,null,"Pubbl/distr/stampa",null,"Washington, D.C., : National Academy Press, 1996"]
[null,null,"ISBN",null,"9786610192267"]
[{"$nulls":4},"9780309175722"]
[{"$nulls":4},"0309175720"]
[{"$nulls":4},"9781280192265"]
[{"$nulls":4},"1280192267"]
[{"$nulls":4},"9780309589024"]
[{"$nulls":4},"0309589029"]
[{"$nulls":4},"9780585099309"]
[{"$nulls":4},"0585099308"]
[null,null,"Edizione",null,"[1st ed.]"]
[null,null,"Descrizione fisica",null,"1 online resource (xvi, 226 pages) : illustrations, maps, charts"]
[null,null,"Disciplina",null,"333.91/14/097913"]
[null,null,"Soggetti",null,"Dams - Environmental aspects - Arizona - Grand Canyon"]
[{"$nulls":4},"Rivers - Regulation - Arizona - Grand Canyon"]
[{"$nulls":4},"Glen Canyon Dam (Ariz.)"]
[{"$nulls":4},"Colorado River (Colo.-Mexico) Regulation"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","Bibliographic Level Mode of Issuance: Monograph"]
[null,null,null,"Nota di bibliografia","Includes bibliographical references."]
[null,null,"Nota di contenuto",null,"River Resource Management in the GRAND CANYON -- Copyright -- Preface -- Contents -- Executive Summary -- WORK OF THE NRC COMMITTEE -- OBJECTIVES AND DESIGN OF THE GCES -- RESULTS OF THE GCES -- Operations of Glen Canyon Dam -- Sediment and Hydrology -- Biological Resources -- Recreation -- Hydropower Economics -- Cultural Resources -- Institutional Influences on the GCES -- Nonuse Values -- ACHIEVEMENTS OF GCES -- LIST OF NRC REPORTS -- 1 Introduction and Background -- ROLE OF THE NRC -- REFERENCES -- 2 Scope and Organization of the Glen Canyon Environmental Studies -- INTRODUCTION -- SCOPE AS DEFINED BY MANAGEMENT OPTIONS, RESOURCES, AND THE ECOSYSTEM CONCEPT -- Management Options -- Resources -- The Ecosystem Perspective -- "]
[{"$nulls":4},"OTHER INFLUENCES ON THE SCOPE OF GCES -- Administrative Policy -- Law and Politics -- ORGANIZATION OF THE STUDY GROUP -- CONCLUSIONS -- REFERENCES -- 3 Historical Context for Long-Term Management of Glen Canyon Dam -- HISTORY OF GRAND CANYON NATIONAL PARK -- Introduction -- Predesignation History -- Designation as a Park -- Role of the Colorado River in the Park: Conduit Between Upper and Lower Basins -- FUTURE BASIS FOR MANAGEMENT OF GRAND CANYON RESOURCES -- Intergenerational Equity -- Simulated Naturalness -- REFERENCES -- 4 Operation of Glen Canyon Dam -- INTRODUCTION -- HYDROLOGY THROUGH THE GRAND CANYON -- Hydrology Prior to Construction of Glen Canyon Dam -- Hydrology Following Closure of the Dam -- Tributary Inflows Below the Dam -- Hydrological Regimes During the GCES Research Periods -- Travel Time Through Grand Canyon -- OPERATING RULES FOR GLEN CANYON DAM -- Seasonal and Annual Operations -- Formal Description of Operating Rules -- Monthly and Annual Releases -- Daily and Hourly Operations -- Daily Operations -- Experience with Interim Flows and Exception Criteria -- EIS Preferred Alternative."]
[{"$nulls":4},"Beach/Habitat-Building Flows -- Operational Constraints on Experimental Floods -- WATER SUPPLY ABOVE THE DAM -- Water Balance In Lake Powell -- Upper-Basin Depletions -- Evaporation Loss -- Storage in Lake Powell -- Flood Control -- Current Rules Related to Floods -- Flood Control Changes Recommended in EIS -- Reregulating Dam -- Summary -- RECOMMENDATIONS -- REFERENCES -- 5 Sediment and Geomorphology -- WHY SEDIMENT AND GEOMORPHOLOGY ARE IMPORTANT -- Amount of Sediment Is Not a Problem in the Grand Canyon -- Management of Sediment -- Rapids -- Sand as Substrate -- SEDIMENT STUDIES OF GCES PHASE I -- Bureau of Reclamation Model -- Early Assumptions Concerning Sediment Movement -- Coordination and Communication -- Leadership for GCES -- NRC Committee Recommendations After GCES I -- WHAT IS NEEDED CONCERNING SEDIMENT AND GEOMORPHOLOGY -- Sediment Budget -- Sediment Budget by Reach -- Sand Distribution Between Main Channel and Beaches -- Flood Waves -- U.S. Geological Survey Effort on Sediment Modeling -- USGS Effort on Eddy Modeling -- Linking of Sediment Modeling and Eddy Modeling -- NAU Beach and Bar Studies -- WHERE WE STAND NOW -- RECOMMENDATIONS -- REFERENCES -- 6 Organisms and Biological Processes -- INTRODUCTION -- LAKE POWELL -- Characteristics of Lake Powell -- Influence of Dam Operations on the Lake -- Overview of Lake Studies -- Changes in the River Caused by the Dam -- THE COLORADO RIVER BETWEEN GLEN CANYON DAM AND THE PARIA RIVER -- Primary Producers and Their Metabolism -- THE COLORADO RIVER FROM THE PARIA RIVER TO LAKE MEAD -- Physical Characteristics -- Overview of Communities -- Aquatic Habitats -- Humpback Chub -- Other Fishes -- Tributaries -- Biotic Interactions -- Overview of Biotic Studies on the Main Stem -- THE RIPARIAN ZONE -- OUTCOMES OF BIOLOGICAL STUDIES -- REFERENCES -- 7 Recreation and Nonuse Values."]
[{"$nulls":4},"THE ROLE OF ECONOMIC VALUES IN GCES AND THE EIS -- Use and Nonuse Values Defined -- Measurement of Nonuse Values -- OVERVIEW OF RECREATIONAL USES -- Fishing in Glen Canyon -- Fishing in Grand Canyon -- Day Rafting -- White-Water Boating -- Recreation at Lakes Powell and Mead -- Recreation and Native American Tribes -- ECONOMIC EFFECTS OF DAM OPERATION ON RECREATION -- Background on Economic Methods Used -- Economic Effects of Dam Operations on Anglers -- Economic Effects of Dam Operations on Day Rafting -- Economic Effects of Dam Operations on White-Water Boating -- Economic Impacts of Dam Operations on Native "]
[{"$nulls":4},"American Tribes -- SUMMARY OF EFFECTS OF DAM OPERATIONS ON RECREATION -- STUDIES OF NONUSE VALUE -- SUMMARY -- REFERENCES -- 8 Cultural Resources -- NATIVE AMERICANS IN THE GRAND CANYON REGION -- Overview of Present Residents -- Historical Perspective -- Background Information on the Six Tribes -- Hualapai -- Havasupais -- Southern Paiute Consortium -- Hopis -- Navajos -- Zunis -- ARCHAEOLOGICAL STUDIES -- ETHNOGRAPHIC STUDIES -- Perspectives on Ethnography -- Sacred Sites -- The Hualapai Tribe -- Southern Paiute -- Hopi -- Navajo -- Zuni -- Perspective on Tribal Studies -- SUMMARY -- RECOMMENDATIONS -- REFERENCES -- 9 Power Economics -- INTRODUCTION -- FLOWS AFFECT ELECTRICAL OUTPUT AND COSTS -- THE INSTITUTIONAL CONTEXT -- COST ESTIMATES FOR ALTERED FLOW REGIMES -- RECOMMENDATIONS -- REFERENCES -- 10 Institutional Influences on the Glen Canyon Environmental Studies -- INSTITUTIONAL STRUCTURE OF GCES -- INTERAGENCY CONFLICT IN THE EVOLUTION OF GCES -- GOAL SUBSTITUTION BY AGENCIES WORKING FOR GCES -- EXTERNAL REVIEW - GCES AND THE NRC -- THE ROLE OF FUNDING IN GCES -- TIME CONSTRAINTS IN GCES RESEARCH -- FUTURE INSTITUTIONS -- RECOMMENDATIONS -- REFERENCES -- 11 Lessons of the Glen Canyon Environmental Studies -- INTRODUCTION."]
[{"$nulls":4},"ELEMENTS OF A USEFUL ECOSYSTEM ANALYSIS -- The Planning Sequence -- Review of Existing Information -- Definition of Scope -- Using What Is Already Known -- Implementation of the Plan -- Formation of the Study Group -- Contracting and Project Leadership -- Outside Advice -- Achievements and Dissemination of Information -- Reference to Final Objectives -- Budgetary Continuity -- COMPLETION AND ANTICIPATION OF FUTURE NEEDS -- Synthesis -- Archiving for the Future -- Continuity into the Future -- ACHIEVEMENTS OF GCES -- Important Discoveries of GCES -- Recognition of the Need for Comprehensive Environmental Studies -- Adaptive Management and Long-Term Monitoring -- External Expertise and Review -- A HOPEFUL VIEW OF THE FUTURE -- REFERENCES -- Appendix A Biographical Sketches of Committee Members -- NATIONAL RESEARCH COUNCIL STAFF."]
[null,null,null,"Sommario/riassunto","Federal management of water is undergoing a change that involves a drastic reduction in the number of new water projects and an increase in emphasis on the quality of water management. This book summarizes and analyzes environmental research conducted in the lower Colorado River below the Glen Canyon Dam under the leadership of the Bureau of Reclamation. It reviews alternative dam operations to mitigate impacts in the lower Colorado riverine environment and the strengths and weaknesses of large federal agencies dealing with broad environmental issues and hydropower production. While many problems remain to be solved, the Bureau of Reclamation through the Glen Canyon area. The lessons of GCES are transferable to other locations and could be the basis for a new era in the management of western waters."]