Mount Morris Dam under pressure amid rising waters

Heavy rainfall has pushed the dam's capacity, with officials reporting an estimated 86 feet of water stored behind the structure.

Apr. 3, 2026 at 8:34pm

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A sweeping, atmospheric landscape painting in muted tones of grey, blue, and green, depicting the Mount Morris Dam nestled within a vast, turbulent scene of heavy rain, swirling clouds, and churning waters, conveying the overwhelming scale and sublime power of the natural forces at play.The Mount Morris Dam, a critical flood control structure, faces the immense power of a severe weather event that has pushed its capacity to the limit.Rochester Today

The Mount Morris Dam, located about 60 miles south of Rochester, New York, has captured a significant amount of runoff from recent heavy rainfall, according to dam manager Steve Winslow. The dam is the largest concrete gravity dam east of the Mississippi River and can hold roughly 98.4 billion gallons of water in its reservoir. Officials are closely monitoring the dam's structural integrity and adjusting operations as needed to protect downstream communities from flooding.

Why it matters

The Mount Morris Dam is a critical piece of infrastructure that helps control flooding along the Genesee River. As extreme weather events become more frequent due to climate change, the dam's ability to manage high water levels is crucial for protecting nearby communities from potential disaster.

The details

The recent rainfall has pushed the dam's capacity, with officials reporting an estimated 86 feet of water stored behind the structure. Crews are closely monitoring conditions and adjusting the dam's hydraulically operated gates to slow the flow of water moving south. As conditions improve, workers are initiating controlled releases to gradually bring water levels back down.

  • The dam captured a significant amount of runoff from the recent storm.
  • Crews conducted a late-night gate operation and increased the flow throughout the day as downstream areas started returning toward normal.

The players

Steve Winslow

The dam manager of the Mount Morris Dam.

Mount Morris Dam

The largest concrete gravity dam east of the Mississippi River, standing about 250 feet tall and capable of holding roughly 98.4 billion gallons of water in its reservoir.

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What they’re saying

“We've captured a good portion of that water that would otherwise have flowed downstream and exacerbated flood conditions.”

— Steve Winslow, Dam Manager

What’s next

Officials say monitoring efforts will continue in the coming days as water levels stabilize.

The takeaway

The Mount Morris Dam's ability to manage high water levels during extreme weather events is crucial for protecting nearby communities from potential flooding disasters. As climate change increases the frequency of such events, the dam's performance will remain a critical focus for local authorities.