Cayuga Lake Water Levels
Lake level extremes, either high or low, can affect shoreline habitats adversely, cause shoreline property damage, and interfere with recreational uses of the Lake. Information is provided here to help shoreline owners and recreationists know current and projected lake levels.
Cayuga Lake water levels are managed by a dam at Mud Lock at the north end of the Lake. The lake level varies seasonally about 4.4 feet from spring’s high to winter’s low based on long-term averages. However, unusual weather conditions within the region can and do cause levels to exceed these levels, on both the high and low ends. This has been the case with extreme weather events in recent years.
Ability to manage Cayuga Lake is difficult in part because it is dependent on the level of the Seneca River, into which Cayuga Lake drains. In summer the river is typically 9 feet lower than the Lake and regulation of the Lake level can be achieved. But, severe weather in either the summer or winter can have the River level near flood conditions and lowering Cayuga Lake would create damaging flood conditions for the River homes, limiting the Lake water release. Release of water from Seneca Lake is managed by the Gravity Renewables, owner of hydropower plants in Seneca Falls and Waterloo. They watch Seneca Lake levels and make more of less electric power as levels change.The interaction of these levels can be monitored on the Lake Level Chart linked below.
Current and Projected Lake Level
The New York State Canal Corporation, which operates the dam at Mud Lock, provides this chart of current and projected lake levels that is updated at least weekly. The Canal Corporation is responsible for maintaining water levels of the canal system within the Oswego River Basin for navigational purposes.
The United States Geological Survey maintains a lake level gauge on Cayuga Inlet at Ithaca and provides this chart of current lake levels. Scroll down on the page to see the chart.
The National Weather Service, Advanced Hydrologic Prediction Service provides this chart of current lake level and current flood outlook.