Documents & Info Documents and Information
- Press Releases:
- "High-Flow Experiment Proposed to Improve Grand Canyon Resources" (USGS, Reclamation, NPS - January 17, 2008)
- "Endangered Humpback Chub Population in Grand Canyon Stabilizing" (GCMRC August 2006) - Department of the Interior Memorandums:
- June 16, 2006 memorandum from ASWS Mark Limbaugh to AMWG
- March 3, 2006 memorandum from former Secretary Norton to ASWS Mark Limbaugh and Upper Colorado Regional Director Rick Gold
- March 3, 2006 memorandum from former Secretary Norton to AMWG - Biological Assessment on the Operation of Glen Canyon Dam and Proposed Experimental Flows for the Colorado River Below Glen Canyon Dam During the years 2008-2012 (December 2007)
- 2005 State of the Colorado River Ecosystem in Grand Canyon (SCORE Report)
- Download / View Individual Chapters
- Download / View Entire Document (PDF - 6.74 MB) - Colorado River Ecosystem Science Symposium (Oct. 2005) - Speech by Michael Gabaldon, former Secretary's Designee, Adaptive Management Work Group
- Comparison of Sediment Transport and Bar Response Results - 1996 and 2004 Controlled Flood Experiments on the Colorado River in Grand Canyon
- Operation of Glen Canyon Dam Final Environmental Impact Statement
Law of the River and Related Legislation
2005 - State of the Colorado River Ecosystem in Grand Canyon (SCORE Report) - by Individual Chapters
- Overview (PDF - 408 KB)
- Chapter 1 - Influence of Glen Canyon Dam Operations on Downstream Sand Resources of the Colorado River in Grand Canyon (PDF - 405 KB)
- Chapter 2 - Fishes of Grand Canyon (PDF - 856 KB)
- Chapter 3 - Climatic Fluctuations, Drought, and Flow in the Colorado River (PDF - 273 KB)
- Chapter 4 - Water Quality in Lake Powell and the Colorado River (PDF - 1.25 MB)
- Chapter 5 - Aquatic Ecology: the Role of Organic Matter and Invertebrates (PDF - 375 KB)
- Chapter 6 - Riparian Vegetation and Associated Wildlife (PDF - 975 KB)
- Chapter 7 - Birds of the Colorado River in Grand Canyon: a Synthesis of Status, Trends, and Dam Operation Effects (PDF - 237 KB)
- Chapter 8 - Debris Flows in Grand Canyon and the Rapids on the Colorado River (PDF - 1.1 MB)
- Chapter 9 - Recreation Use Values and Nonuse Values of Glen and Grand Canyons (PDF - 171 KB)
- Chapter 10 - Status and Trends of Hydropower Production at Glen Canyon Dam (PDF - 192 KB)
- Chapter 11 - Cultural Resources in the Colorado River Corridor (PDF - 423 KB)
- Chapter 12 - Recreational Values and Campsites in the Colorado River Ecosystem (PDF - 395 KB)
- Chapter 13 - Lessons from 10 Years of Adaptive Management in Grand Canyon (PDF - 133 KB)