Reports
On this page you will find various published reports from Interior Region 7 – Upper Colorado Basin. Those reports that are recurring are grouped together and listed chronologically, those that do not fall in to a grouped category are listed chronologically in the Miscellaneous Reports section.
- Operating Reports
- Project Reports
- Annual Reports
- Consumptive Uses and Loss Reports and Data
- Historic Resources Documentation
- Miscellaneous Reports
Annual Reports of Operations for Flaming Gorge Dam
Annual Reports on the Colorado River Basin Salinity Control Program
Annual Reports for the Paradox Valley Seismic Network
Annual Reports for the Selenium Management Program
Arizona Portion of the Upper Colorado River Basin - Consumptive Uses and Losses Reports
The Arizona portion of the Upper Colorado River Basin covers approximately 6,900 square miles in the north-east corner of Arizona. Except for Page, Arizona; a small area around Lees Ferry; and a portion of the Paria Plateau administered by the Bureau of Land Management; the study area lies entirely within the Navajo Nation.
Water is used for irrigation, municipal and industrial purposes, thermal electric power generation, livestock, fish and wildlife, and recreation. During the Retirement Period of the Navajo Generating Station (which began on December 23, 2019 and continues through December 22, 2024), the water usage will be no more than 1,500 acre-feet per calendar year.
The Colorado River Basin Project Act of 1968, Public Law 90-537, Section 601 (b)(1), dated September 30, 1968, directs the Secretary of the Interior to
"make reports as to the annual consumptive uses and losses of water from the Colorado River System after each successive five-year period, beginning with the five-year period starting on October 1, 1970… Such reports shall include a detailed breakdown of the beneficial consumptive use of water on a state-by-state basis."
Additionally, in compliance with Section 49 of the Navajo Project Participation Agreement dated September 30, 1969, which states in part:
"The Secretary of the Interior further agrees to make the reports required by Section 601 (b)(1) of Public Law 90-537 as they pertain to Arizona's Upper Basin uses annually rather than every five years. Within fifteen days following the completion of said reports, the Secretary of the Interior shall furnish copies of such reports to the Co-Tenants, the Navajo Tribe, each of the Upper Basin States, and the Upper Colorado River Commission."
These reports reflect the Department of the Interior's best estimate of actual consumptive uses and losses for each year within the Arizona portion of the Upper Colorado River Basin. The reliability of the estimates is affected by the availability of data and the current capabilities of data evaluation. The reports include a breakdown of the beneficial consumptive use by major types of use
For more infomation about Arizona Portion of the Upper Colorado River Basin – Consumptive Uses and Losses Reports contact: Jim Prairie at jprairie@usbr.gov
Colorado River System – Consumptive Uses and Losses Reports
The main stem of the Colorado River rises in the Rocky Mountains of Colorado, flows southwesterly about 1,400 miles and terminates in the Gulf of California. Its drainage area of 242,000 square miles in this country represents one-fifteenth of the area of the United States. Water is used for irrigation, municipal and industrial purposes, thermal electric power generation, mineral activities, livestock, fish and wildlife, and recreation. Large amounts are exported from the system to adjoining areas.
The Colorado River Basin Project Act of 1968, Public Law 90-537, directs the Secretary of the Interior to
"make reports as to the annual consumptive uses and losses of water from the Colorado River System after each successive five-year period, beginning with the five-year period starting on October 1, 1970. Such reports shall be prepared in consultation with the States of the lower Basin individually and with the Upper Colorado River Commission and shall be transmitted to the President, the Congress, and to the Governors of each State signatory to the Colorado River Compact."
These reports reflect the Department of the Interior's best estimate of actual consumptive uses and losses for each year within the Colorado River. The reliability of the estimates is affected by the availability of data and the current capabilities of data evaluation.
The reports include a breakdown of the beneficial consumptive use by major types of use (except mainstream reservoir evaporation), by major tributary streams, and, where possible, by individual States.
Pursuant to the Colorado River Basin Project Act of 1968, Public Law 90-537 these Upper Colorado River System Consumptive Uses and Losses (CUL) data present estimates of the anthropogenic consumptive uses and losses within the Colorado River System for calendar years 1971-2023. The reported data includes a breakdown of consumptive uses and losses in the system, categorizing them by major types of use, major tributary streams, and by individual states.
Per the Colorado River Compact of 1922 the Colorado River System is defined as that portion of the Colorado River and its tributaries within the United States.
For more infomation about Colorado River System – Consumptive Uses and Losses Reports contact: Jim Prairie at jprairie@usbr.gov
Glen Canyon Dam Long-Term Experimental and Management Plan Compliance and Conservation Measures Progress Reports
Historic Resources Documentation
Reports to Congress – Operations of Glen Canyon Dam
Reports to the Pecos River Commission
Reports to the Rio Grande Compact Commission
Miscellaneous Reports
For more infomation about Miscellaneous Reports contact ucrnepa@usbr.gov
