Lower Colorado River Water Accounting
Forecasted Water Use - 2024 *NEW*
Actual Water Use - 2024 *NEW*
Forecasted Water Use - 2023
Actual Water Use - 2023
Arizona
California
Nevada
Mexico
Reporting Forms
The Lower Colorado River Mainstream Evaporation and Riparian Evapotranspiration Losses Report *NEW*
Exploration of Quantification Methods for Agricultural Water Savings in the Lower Colorado River Basin
Law of the River
43 CFR Part 417
Inadvertent Overrun and Payback Policy
Yuma Area Water Accounting Policy Beginning in CY 2003
Unused Water Policy
2007 Interim Guidelines
Colorado River Basin Drought Contingecy Plans
History and Types of Reports
The Lower Colorado Basin Region's Water Accounting and Verification Office provides regular reports on diversions and water uses and losses in the lower Colorado River Basin through the following three reports:
• Water Accounting Reports
• Consumptive Uses and Losses Reports
• Lower Colorado River Annual Summary of Evapotranspiration and Evaporation Reports
While source data from one report may be utilized in others, each is a standalone report with differing definitions and methodologies.
Note: All reports are formatted as Adobe Acrobat PDF files.
Water Accounting Reports |
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The "Water Accounting Report" tabulates measured diversions, measured returns and consumptive use of each user taking water from the lower Colorado River: |
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Lower Colorado River Consumptive Uses and Losses |
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The "Lower Colorado River Consumptive Uses and Losses" (CUL) Reports present estimates of the anthropogenic consumptive uses and losses from the Colorado River Basin for each calendar year starting in 1971. The reported data includes a breakdown of consumptive uses and losses in the basin, categorizing them by major types of use, major tributary streams, and by individual states. |
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*COMING SOON* |
Contact: Troy Wirth at: twirth@usbr.gov.