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Sediment buildup at John Redmond Reservoir in Coffey County, Kansas, poses a threat to water supply for local communities and Evergy's Wolf Creek Nuclear Generating Station. A report indicates a 44% reduction in storage capacity due to sediment accumulation as of 2025.

The U.S. Army Corps of Engineers and Kansas Water Office are assessing solutions, including a proposed $1.5 million hydrosuction project to transport sediment downstream. The reservoir has prevented $1.65 billion in flood damages since its construction in 1963 but requires ongoing sediment removal to maintain water supply for crucial operations. The hydrosuction method aims to minimize costs and land acquisition needs.