Publication Citation

USGS Series Circular
Report Number 1282
Title The state of the Colorado ecosystem in Grand Canyon: a report of the Grand Canyon Monitoring and Research Center 1991-2004
Edition -
Language ENGLISH
Author(s) edited by Gloss, Steven P.; Lovich, Jeffrey E.; Melis, Theodore S.
Year 2005
Originating office National Wetlands Research Center
USGS Library Call Number
Physical description ix, 220 p.
ISBN

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Abstract

Intro paragraph: This report is an important milestone in the effort by the Secretary of the Interior to implement the Grand Canyon Protection Act of 1992 (GCPA; title XVIII, secs., 1801-1809, of Public Law 102-575), the most recent authorizing legislation for Federal efforts to protect resources downstream from Glen Canyon Dam. The chapters that follow are intended to provide decision makers and the American public with relevant scientific information about the status and recent trends of the natural, cultural, and recreational resources of those portions of Grand Canyon National Park and Glen Canyon National Recreation Area affected by Glen Canyon dam operation. Glen Canyon Dam is one of the last major dams that was built on the Colorado River and is located just south of the Arizona-Utah border in the lower reaches of Glen Canyon National Recreation Area, approximately 15 mi (24 km) upriver from Grand Canyon National Park (fig. 1). The information presented here is a product of the Glen Canyon Dam Adaptive Management Program (GCDAMP), a federally authorized initiative to ensure that the primary mandate of the GCPA is met through advances in information and resource management. The U.S. Geological Survey's (USGS) Grand Canyon Monitoring and Research Center (GCMRC) has responsibility for the scientific monitoring and research efforts for the program, including the preparation of reports such as this one.