Lower Colorado River Basin Achieves Initial Water Use Reduction Targets, But Deeper Cuts Pose Unprecedented Challenges
The Lower Colorado River Basin states have successfully reduced their consumptive water use, with 2023, 2024, and 2025, and the forecast for 2026, showing the smallest usage in the 2010-2026 period. These reductions, ranging from 1.4 to 1.7 million acre-feet per year (maf/yr) less than the typical 7.50 maf/yr allocation, align with the initial shortage targets outlined in the Final Environmental Impact Statement (FEIS) for Post-2026 Operational Guidelines. Key contributors to these savings include significant reductions by Central Arizona Project (CAP) contractors and subcontractors, the Imperial Irrigation District (IID), and non-CAP water users in Arizona. Notably, reductions in IID have primarily occurred during summer months, affecting field crops like alfalfa and grass hay, without impacting winter garden crop production. However, achieving the potential maximum Lower Basin reduction of 3 maf/yr, as allowed by the Record of Decision (ROD), would require cuts beyond any historical precedent, as the sum...