Water Deliveries to Lake Powell Could Fall More Than 50%, Researchers Warn
Summary
A recent study warns that water flowing into Lake Powell from Colorado’s rivers could drop by over half by around 2050 due to drought, changes in snowmelt, and rising water use. This poses challenges for managing the Colorado River, which provides water and power to millions across the Southwest.Key Facts
- Water deliveries to Lake Powell could decrease by up to 52% below current averages by midcentury.
- The study looked at six river basins in Colorado that supply about 70% of Lake Powell’s water.
- Changes in snowmelt timing affect water availability because snow stores water until it melts gradually.
- Researchers simulated 20,000 future scenarios considering drought, snow patterns, and water demands from cities, farms, and industry.
- Major reservoirs on the West Slope may hold 40-55% less water than usual, reducing their ability to manage shortages.
- The Colorado River system storage is currently about 36% of its capacity due to long-term drought.
- Lake Powell could fall below the minimum level needed to generate hydropower by August 2026 without big changes.
- The study recommends tailoring water management strategies to different basins and uses instead of one general plan.
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