Movable Dam At Mays Point dam
Movable Dam At Mays Point
The Movable Dam at Mays Point, also known as the Lock E-25 Dam, is a state-owned structure located in Fox Ridge, Seneca, New York. Completed in 1915, this dam plays a critical role in flood risk reduction along the Clyde River, with a primary purpose of ensuring navigation and safety along the waterway. Standing at a height of 10 feet and stretching 165 feet in length, the dam has a storage capacity of 504 acre-feet, serving a drainage area of 864 square miles.
Managed by the New York State Department of Environmental Conservation, the Movable Dam at Mays Point has a controlled spillway with a width of 120 feet, ensuring effective water flow regulation during periods of high discharge. Despite a low hazard potential, the dam is rated for a very high risk due to its age and potential for structural issues. While the condition assessment is currently not rated, regular inspections and state regulatory oversight help to ensure the dam's continued functionality in mitigating flood risks and protecting the surrounding communities. Enthusiasts of water resources and climate management will find the Movable Dam at Mays Point to be a fascinating example of infrastructure designed to balance flood control and navigation needs along a vital waterway in New York.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Movable Dam At Mays Point -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Seneca River (Erie Canal) Near Port Byron Ny | 7,850 cfs | → |
| Owasco Outlet At Genesee St. | 1,190 cfs | → |
| Flint Creek At Phelps Ny | 383 cfs | → |
| Keuka Lake Outlet At Dresden Ny | 405 cfs | → |
| Canandaigua Outlet At Chapin Ny | 209 cfs | → |
| Erie (Barge) Canal At Lock 30 | 232 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Movable Dam At Mays Point.
Boat launches
- Cayuga Lake
- Seneca River
- Seneca Lake State Park Fayette Town
- Erie Canalway Trail Newark
- West Port Bay Road 7756, Wolcott Town
Track Movable Dam At Mays Point in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Movable Dam At Mays Point
Where does the data for Movable Dam At Mays Point come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Low hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Movable Dam At Mays Point.