Mance Pond Dam dam
Mance Pond Dam
Mance Pond Dam, also known as Alder Pond, is a privately owned earth dam located in Delaware County, New York. Completed in 1991, this recreational structure stands at a height of 12 feet and spans a length of 470 feet, with a storage capacity of 79 acre-feet. Situated on the TR-Tremper Kill river/stream, the dam's primary purpose is for recreation, offering a serene 9-acre surface area for water enthusiasts and nature lovers to enjoy.
Managed by the New York State Department of Environmental Conservation (NYS DEC), Mance Pond Dam is regulated, permitted, inspected, and enforced to ensure its safety and compliance with state guidelines. Despite its low hazard potential and moderate risk assessment, the dam's condition remains unrated as of the last inspection in April 2006. With an uncontrolled spillway width of 76 feet, the dam continues to provide a tranquil and secure environment for visitors seeking outdoor recreational activities in the heart of New York's picturesque countryside.
For water resource and climate enthusiasts, Mance Pond Dam stands as a testament to the harmonious balance between human recreation and environmental stewardship. With its modest size and careful management, this earth dam serves as a sustainable oasis for those seeking solace in nature while upholding the importance of responsible dam operation and maintenance. As climate change continues to impact water resources, Mance Pond Dam exemplifies the resilience and adaptability needed to preserve our natural landscapes for future generations to enjoy.
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 Mance Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Delaware River Near Delhi Ny | 51 cfs | → |
| W Br Delaware River Upstream From Delhi Ny | 154 cfs | → |
| Tremper Kill Near Andes Ny | 32 cfs | → |
| Platte Kill At Dunraven Ny | 42 cfs | → |
| Mill Brook Near Dunraven Ny | 40 cfs | → |
| East Br Delaware R At Margaretville Ny | 175 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mance Pond Dam.
Boat launches
- Bureau Of Water Supply Road 3 Town Of Andes
- Nyc 4 Road Town Of Andes
- Susquehanna River
- Mine Kill State Park Road Town Of Blenheim
Track Mance Pond Dam 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 Mance Pond Dam
Where does the data for Mance Pond Dam 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 Mance Pond Dam.