Mill Pond Dam dam
Mill Pond Dam
The Mill Pond Dam, located in Water Mill, New York, is a historic structure completed in 1920 with a primary purpose of recreation. This earth dam stands at a height of 11 feet and spans 100 feet in length, holding a maximum storage capacity of 430 acre-feet. Situated on Mill Creek, the dam serves as a crucial resource for maintaining water levels in the area and supporting recreational activities in the region.
Managed by the local government and regulated by the New York State Department of Environmental Conservation, the Mill Pond Dam has a low hazard potential and a moderate risk assessment rating. While the dam's condition is currently not rated, it undergoes regular inspections and is equipped with an uncontrolled spillway with a width of 3 feet. The surrounding area benefits from the dam's presence, offering a surface area of 90 acres for water-based recreation and supporting a diverse ecosystem.
Enthusiasts of water resources and climate in Suffolk County, New York, can appreciate the significance of the Mill Pond Dam as a vital infrastructure for water management and recreational activities. As efforts continue to ensure the safety and integrity of this historic structure, its role in providing a sustainable water supply and enhancing the local environment remains a key focus for the community and regulatory agencies. With a rich history and ongoing maintenance, the Mill Pond Dam stands as a testament to the intersection of human development and environmental stewardship in the region.
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 Mill Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Peconic River At Riverhead Ny | 17 cfs | → |
| Indian River Near Clinton | 6 cfs | → |
| Carmans River At Yaphank Ny | 15 cfs | → |
| Swan River At East Patchogue Ny | 12 cfs | → |
| East Branch Eightmile River Near North Lyme | 24 cfs | → |
| Eightmile R At North Plain | 19 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mill Pond Dam.
Boat launches
- 1st Street 380, New Suffolk
- Gagen's Lnnding Road Southold
- Hands Creek Road 809, Northwest Harbor
- Middle Road 4805, Mattituck
- Peconic Bay Boulevard Jamesport
- Lake Court Southold
Campgrounds
- Shinnecock East County Park Dispersed
- Sears Bellows
- Indian Island Park
- Cupsogue County Park
- Wildwood State Park
- Southaven County Park
Fishing spots
Track Mill 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 Mill Pond Dam
Where does the data for Mill 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 Mill Pond Dam.