Colorado River ecology and dam management : proceedings of a symposium, May 24-25, 1990, Santa Fe, New Mexico / Committee to Review the Glen Canyon Environmental Studies, Water Science and Technology Board, Commission on Geosciences, Environment, and Resources.

Format:

Book

Contributor:

National Research Council (U.S.). Committee to Review the Glen Canyon Environmental Studies.

Language:

English

Subjects (All):

Stream ecology--Arizona--Glen Canyon Dam Region--Congresses.

Stream ecology.

Glen Canyon Dam (Ariz.)--Environmental aspects--Congresses.

Glen Canyon Dam (Ariz.).

Physical Description:

1 online resource (ix, 276 pages) : illustrations

Edition:

1st ed.

Place of Publication:

Washington, D.C. : National Academy Press, 1991.

Language Note:

English

Summary:

This book contains 11 papers that review the extant information about the Colorado River from an ecosystem perspective and serve as the basis for discussion of the use of ecosystem/earth science information for river management and dam operations. It also contains a synopsis of the committee's findings and recommendations to the Bureau of Reclamation as the agency seeks to change its direction to the management of natural resources.

Contents:

Colorado River Ecology and Dam Management

Copyright

Contents

Acknowledgments

Committee Synopsis

FINDINGS AND RECOMMENDATIONS

Initiate Long-Term Research and Monitoring in the Grand Canyon

Ensure that Dam Operations Are Flexible

Seek Research Talent from the Academic Sector

Include the USGS on the Federal Executive Management Committee

Use an Ecosystem Approach to Grand Canyon Research

Revisit 1987 NRC Recommendations on the GCES

REFERENCES

1 The Law and Politics of the Operation of Glen Canyon Dam

INTRODUCTION

HISTORY OF RIVER DEVELOPMENT

DIVIDING THE WATERS: THE ORIGINS OF THE LAW OF THE RIVER

Structure of the Compact

The Evolving Law of the River

DISTRIBUTING FEDERAL LARGESSE

THE NECESSITY FOR FURTHER ALLOCATIONS: SECURITY UNDERMINED BY CONFLICT

ACCOMMODATION OF NEW VALUES

Omitted Interests: Indians and Mexico

Accommodating Emerging Values

HOW SHALL THE COMPUTERS BE PROGRAMMED: MANAGING THE RIVER IN THE SHADOW OF THE LAW

CONCLUSION

2 The Role of Science in Natural Resource Management: The Case for the Colorado River

THE STRENGTH OF SCIENCE

THE LIMITS OF SCIENCE

MANAGEMENT CHOICES

THE CASE FOR THE COLORADO RIVER

THE LONG-TERM INTERACTION BETWEEN SCIENCE AND MANAGEMENT

ECOSYSTEM SCIENCE

OPPORTUNITY FOR MANAGEMENT

LONG-TERM MONITORING AND SUSTAINED EXPERIMENTAL RESEARCH IN MANAGEMENT TERMS

MANAGEMENT IN SCIENTIFIC TERMS

THE PRESENT STATE OF AFFAIRS

3 Hydrology of Glen Canyon and the Grand Canyon

INTRODUCTION-NATURAL FLOWS INTO LAKE POWELL

EARLY UNDERSTANDING OF COLORADO RIVER FLOWS

THE EARLY HEARINGS ON DEVELOPMENT OF THE LOWER COLORADO

UNCERTAINTY IN AVERAGE STREAMFLOW

EVAPORATION, BANK STORAGE, AND LAKE POWELL WATER BALANCE

RECONSTITUTED, NATURAL INFLOWS TO LAKE POWELL.

GLEN CANYON AND THE RELEASE RULES

RELATIONSHIP OF SEDIMENT TRANSPORT TO STREAM FLOW IN THE CANYON

EFFECT OF OPERATION OF UPPER BASIN STATE RESERVOIRS ON GLEN CANYON AND THE GRAND CANYON

TRAVEL TIMES THROUGH THE GRAND CANYON

4 Sediment Transport in the Colorado River Basin

HISTORICAL SAMPLING OF SEDIMENT CONCENTRATIONS

SOURCE AREAS OF RUNOFF AND SEDIMENT

EFFECTS OF RESERVOIR STORAGE ON SEDIMENT BALANCE IN SELECTED REACHES OF THE COLORADO RIVER

GREEN RIVER DOWNSTREAM FROM FLAMING GORGE RESERVOIR

COLORADO RIVER DOWNSTREAM FROM GLEN CANYON DAM

5 Limnology of Lake Powell and the Chemistry of the Colorado River

MORPHOMETRY AND HYDRODYNAMICS OF LAKE POWELL

Glen Canyon Dam

Physical Features of the Reservoir

River Discharge and the Water Budget of Lake Powell

Seasonal Stratification

PARTICULATE AND DISSOLVED SOLIDS DYNAMICS

Suspended Sediment

Nitrogen, Phosphorus, and Silica

Bioavailability of Particulate Phosphorus

Salinity

Heavy Metals and Other Pollutants

LAKE POWELL FOOD WEB

Phytoplankton

Zooplankton

Benthos

Fishes

Riparian Systems

INFLUENCE OF LAKE POWELL ON ENVIRONMENTS DOWNSTREAM

Lake Powell as a Heat and Materials Sink

Stream Regulation and the Manifestation of Serial Discontinuity

AN ECOSYSTEM APPROACH TO MANAGEMENT

6 Algal and Invertebrate Biota in the Colorado River: Comparison of Pre- and Post-Dam Conditions

PREIMPOUNDMENT CONDITIONS

Algal Communities

Aquatic Invertebrates

POSTIMPOUNDMENT CONDITIONS

AQUATIC INVERTEBRATE COMMUNITIES

Records of Intentional Stocking

Macroinvertebrates

The Amphipod Gammarus Lacustris

Exotic and Unusual Species.

MODIFICATIONS IN BIOTA DUE TO REGULATED FLOWS

Colorado River Studies Between Glen Canyon and Lake Mead

STUDIES ON OTHER REGULATED RIVERS

Plant Communities

Invertebrate Communities

RECOMMENDED RESEARCH

7 Native Fishes of the Grand Canyon Region: An Obituary?

THE PRISTINE HABITAT

UNIQUENESS OF THE FISH FAUNA

HISTORIC REVIEW

Early Records and Surveys

EVIDENCES OF FAUNAL CHANGE

NATIVE FISHES

THE FISH COMMUNITY

REASONS FOR DISAPPEARANCE OF THE FAUNA

Nonbiological Changes

Biological Changes

DISCUSSION

Management Considerations

Politics of Conservation

ACKNOWLEDGMENTS

APPENDIX I

Accounts of Species

Humpback Chub

Bonytail

Colorado Squawfish

Speckled Dace

Flannelmouth Sucker

Bluehead Sucker

Razorback Sucker

8 Historic Changes in Vegetation Along the Colorado River in the Grand Canyon

INTRODUCTION AND OBJECTIVES

Objectives

HISTORY AND BACKGROUND OF BOTANICAL EXPLORATION ALONG THE COLORADO RIVER IN GRAND CANYON

PHOTOGRAPHY AND THE BOTANICAL RECORD

Recent Research and Plant Collections

PREDAM AND POSTDAM VEGETATIONAL COMMUNITIES

CLASSIFICATION OF DESERTS AND PLANT COMMUNITIES

THE COLORADO RIVER AS AN EXCEPTION TO RIPARIAN DESERTIFICATION

EARLY STUDIES AND IMPORTANCE OF RIPARIAN LANDS AS AVIAN HABITAT

IMPACTS OF FLOODING AND FIRE ON THE RIPARIAN ZONE

WOODY RIPARIAN SPECIES OF THE RIPARIAN ZONE

Nonnative Species

Native Species

HERBACEOUS RIPARIAN SPECIES

FLORA AND CHECKLISTS

FAUNA AND CHECKLISTS

Amphibians and Reptiles (Herps)

Birds

Mammals

THREATENED AND ENDANGERED (T &amp

E), RARE, AND ENDEMIC SPECIES

Riparian

Endangered Species

AQUATIC

SUMMARY AND CONCLUSIONS

APPENDIX A.

9 Reservoir Operations

ANNUAL OPERATION WITH MONTHLY TIME STEPS

The USBR Reservoir Model

Modes of Operation for CRSS

Other Reservoir Models

Who Operates the Dam?

USBR Operating Plan

SHORT-TERM OPERATION OF THE DAM

WAPA MODELS OF INCREASED MINIMUM FLOWS

GCES I Model

OTHER RELATED WAPA REPORTS

Report on Impact of Alternative Interim Flows

Report on Cost of Research Flows

GCES ECONOMIC TEAM PROGRESS TO DATE

Ramping Rates

Flows in the Grand Canyon Relative to Dam Releases

Conclusions

10 A Brief History of the Glen Canyon Environmental Studies

NATIONAL RESEARCH COUNCIL INVOLVEMENT WITH THE GLEN CANYON ENVIRONMENTAL STUDIES

APPLICATION OF SCIENCE AND RESEARCH TO MANAGEMENT

GLEN CANYON ENVIRONMENTAL STUDIES-PHASE II

ECOSYSTEM APPROACH AND INTEGRATION OF THE NAS PHASE I CRITIQUE

DEVELOPMENT PROBLEMS FOR THE GLEN CANYON ENVIRONMENTAL STUDIES PROGRAM

INTEGRATING THE GLEN CANYON ENVIRONMENTAL STUDIES PROGRAM WITH THE GLEN CANYON DAM ENVIRONMENTAL IMP...

OPTIONS FOR THE FUTURE

THE CHALLENGES THA LAY AHEAD

SUMMARY AND CLOSURE

11 Glen Canyon Environmental Studies Research Program: Past, Present and Future

BACKGROUND: GLEN CANYON ENVIRONMENTAL STUDIES I, 1982-1987

DEVELOPMENT OF GLEN CANYON ENVIRONMENTAL STUDIES II RESEARCH PROGRAM

REVIEW OF GCES I BY THE NRC COMMITTEE

INITIAL INTEGRATION PHASE OF GCES II

DEVELOPMENT OF SHORT-TERM RESEARCH HYPOTHESES AND EXPERIMENTAL DESIGNS

DEVELOPMENT OF CONTROLLED RESEARCH DISCHARGES FROM GLEN CANYON DAM

DEVELOPMENT OF LONG-TERM RESEARCH AND MONITORING NEEDS

EXPANSION OF THE SHORT-TERM RESEARCH PROGRAM

LONG-TERM MONITORING

CONCLUSIONS

12 Closing Remarks

APPENDIXES

Appendix A Symposium Program

APPENDIX B Biographical Sketches of Committee Members.

APPENDIX C Symposium Invitees

APPENDIX D Glen Canyon Environmental Studies Technical Reports and Related Documents.

Notes:

Bibliographic Level Mode of Issuance: Monograph

Includes bibliographical references.

ISBN:

9786610203635

9781280203633

1280203633

9780309597722

0309597722

9780585099354

0585099359

OCLC:

44954862