It appears yesterday’s ice-safety article made an impact. Just a few hours after it was published, New York State Parks issued a formal statement about conditions at Dunham Reservoir. The timing is notable, whether coincidental or responsive, because it publicly acknowledges what has been developing quietly for weeks: Dunham is entering a hazardous winter shaped entirely by the ongoing drawdown.
“Ice on the Martin Dunham Reservoir is unsafe for recreation this winter. A valve in the dam must remain open throughout winter to relieve pressure on the structure, which may cause unstable ice. Stay off ice. Additionally, NYS Parks is removing the instrument used to measure the reservoir’s water level for the winter to prevent ice damage. As a result, Parks will stop posting reservoir level measurements on the Grafton Lakes State Park website. As of November 19, 2025, Parks confirmed the water level to be equal to the spillway crest. Parks staff will continue monitoring reservoir conditions as part of standard operations.”
— Jim Levulis, Public Affairs & Community Engagement Coordinator, NYS Parks
The language here is careful and deliberate. Opening with “unsafe for recreation this winter” is categorical. It signals that Dunham cannot form reliable ice at any point this season. The explanation that follows confirms the core issue: the valve must remain open all winter to relieve pressure on the structure because there is concern it may not reopen if closed again. This operational constraint ensures continuous outflow beneath forming ice and guarantees instability throughout the freeze.
The phrase “may cause unstable ice” softens the statement, but the mechanics are well documented. A reservoir releasing water during freeze-up does not produce predictable ice layers. Under-ice currents, hollow ice, perched ice, and undercutting are not hypotheticals; they are established outcomes in every hydrologic study of winter drawdowns. Removing the gauge and suspending public water-level reporting underscores the severity of expected ice movement and reduces transparency during a critical period. Without real-time data, the community loses a key tool for tracking the reservoir’s changing behavior as winter deepens.
These operational realities sit on top of visible ecological consequences. Since the drawdown, Dunham has seen accelerated shoreline erosion, large vehicle ruts scarring the drained basin, exposed mudflats destabilizing under minimal weight, a deer found dead in the soft sediment where water once offered support, and late-season warm shallows that contributed to harmful algae blooms. All of this reflects the same underlying condition: a reservoir held artificially low for an extended period.
From a distance, winter may give the impression of a stable freeze. In reality, Dunham’s shallow basin, narrow channels, and ongoing release create a surface that behaves like a landscape still in motion. Snow will disguise weak points. Water will continue to move beneath the ice. The divide between appearance and actual stability will only grow sharper as temperatures fall. The state’s statement acknowledges this, even if gently, and confirms that Dunham is entering a winter of heightened risk.
This season will test both the reservoir and the community’s ability to stay informed. The long-term future of Dunham remains unresolved, and the environmental impacts of the ongoing drawdown will continue to accumulate through winter. What happens in these months will shape every conversation that follows.
As Dunham enters this unstable season, it is clear we are in for a long winter. Conditions will continue to shift beneath the surface long after the ice forms, and warning signs are not always heeded when the landscape looks familiar. This is the time for heightened awareness, steady communication, and vigilance from everyone who cares about this place.
Disclaimer: This post draws on the official statement issued by New York State Parks and incorporates my analysis of the language, timing, and current conditions at Dunham Reservoir. It reflects my understanding as a researcher, writer, and community advocate and is offered solely to support public awareness and safety. Ice conditions can change quickly during an active drawdown, and readers should always follow state advisories and use caution around unstable shoreline and under-ice areas. This information is not legal, engineering, or regulatory advice and should not be interpreted as a substitute for professional guidance.