RIVER ECOLOGY AND MAN
CONTENTS COMMITTEE SYNOPSIS/FINDINGS AND RECOMMENDATIONS THE LAW AND POLITICS OF THE OPERATION OF GLEN CANYON DAM THE ROLE OF SCIENCE IN NATURAL RESOURCE MANAGEMENT: THE CASE FOR THE COLORADO RIVER HYDROLOGY OF GLEN CANYON AND THE GRAND CANYON SEDIMENT TRANSPORT IN THE COLORADO RIVER BASIN LIMNOLOGY OF LAKE POWELL AND THE CHEMISTRY OF THE COLORADO RIVER ALGAL AND INVERTEBRATE BIOTA IN THE COLORADO RIVER: COMPARISON OF PRE- AND POST-DAM CONDITIONS NATIVE FISHES OF THE GRAND CANYON REGION: AN OBITUARY? HISTORIC CHANGES IN VEGETATION ALONG THE COLORADO RIVER IN THE GRAND CANYON CONTENTS COMMITTEE SYNOPSIS IN JULY 1986, THE U S BUREAU OF RECLAMATION (USBR) ASKED A NATIONAL RESEARCH COUNCIL (NRC) COMMITTEE TO HELP EVALUATE THEIR ENVIRONMENTAL STUDIES BEING CONDUCTED ON THE LOWER COLORADO RIVER AND TO PROVIDE ADVICE ON ALTERNATIVE OPERATIONS OF THE GLEN CANYON DAM GLEN CANYON DAM, COMPLETED IN 1964, IS ONE OF SEVERAL HIGH-HEAD, MULTIPURPOSE STORAGE PROJECTS IN THE COLORADO RIVER SYSTEM (SEE MAP) FOR MORE THAN 30 YEARS ISSUES CONCERNING THE EFFECT OF DAM OPERATIONS ON THE NATURAL RESOURCES OF THE GRAND CANYON NATIONAL PARK HAVE BEEN RAISED THE USBR'S GLEN CANYON ENVIRONMENTAL STUDIES (GCES) WERE INTENDED TO EVALUATE THE RELATIONSHIPS BETWEEN DAM OPERATIONS AND THE NATURAL RESOURCES OF THE GRAND CANYON BASED ON THESE ANALYSES, MODIFIED RESERVOIR OPERATING POLICIES WERE TO BE CONSIDERED IT MAY BE USEFUL FOR THE READER TO REFER TO A PREVIOUSLY ISSUED COMMITTEE REPORT, RIVER AND DAM MANAGEMENT: A REVIEW OF THE BUREAU OF RECLAMATION'S GLEN CANYON ENVIRONMENTAL STUDIES (NRC, 1987) TO ASSIST IN UNDERSTANDING THE SCOPE OF GCES ISSUES AND THE NRC'S INVOLVEMENT IN PROVIDING ADVICE TO THE BUREAU OF RECLAMATION IN ITS 1987 REPORT, THE COMMITTEE FOUND THAT THE GCES GAVE INSUFFICIENT ATTENTION TO EARLY PLANNING AND TO CAREFUL ARTICULATION OF GCES OBJECTIVES AND THAT IT INADEQUATELY CONSIDERED MANAGEMENT OPTIONS THE NRC REPORT ALSO NOTED THAT RECOMMENDED MANAGEMENT OPTIONS MADE BY THE BUREAU OF RECLAMATION WERE NOT SUPPORTED BY THE GCES RESEARCH RESULTS AND THAT RESEARCHERS HAD FAILED TO IDENTIFY THE RATIONALE FOR COMMITTEE SYNOPSIS LOCATION MAP OF THE COLORADO RIVER BASIN SOURCE: U S DEPARTMENT OF THE INTERIOR, 1987 COMMITTEE SYNOPSIS