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October 2004 Most Probable 24-Month Study

Published by Bureau of Reclamation | Department of the Interior | Metadata Last Checked: January 06, 2026 | Last Modified: 2025-02-14T15:34:31Z
The Most Probable 24-Month Study report describes projected operations and power generation for Colorado River system reservoirs including Fontenelle, Flaming Gorge, Taylor Park, Blue Mesa, Morrow Point, Crystal, Vallecito, Navajo, Powell, Hoover Dam - Lake Mead, Davis Dam - Lake Mohave, and Parker Dam - Lake Havasu. Operations were projected using Reclamation’s 24-Month Study RiverWare model with the Most Probable unregulated inflow projections provided by the National Weather Service’s Colorado Basin River Forecast Center. The Most Probable inflow scenario reflects a median hydrologic condition which statistically would be exceeded 50% of the time. The operations depicted in this report reflects the Annual Operating Plan as approved by the Secretary of the Interior.

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