Document Type

Report

Publisher

Utah State University

Publication Date

8-11-2025

First Page

1

Last Page

4

Abstract

Colorado River users are now discussing dividing river flow on a percentage basis (Fleck, 2025; Hager, 2025, Winslow, 2025). This is an important step to managing a declining and more volatile supply. In our prior May 2025 post, we shared a strategy we have worked on for several years— division of river flow—as one of 13 reasons why we have hope for consensus on Colorado River management. In this post, we address the question: How extreme low river flow and reservoir storage should we plan for going forward (Figure 1)? We also share our insights from numerically stabilizing and recovering Lake Powell and Lake Mead storage during those crises.

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