Fresh Pond Dam dam
Fresh Pond Dam
Fresh Pond Dam, located in Suffolk County, New York, is a privately owned structure with a primary purpose of recreation. Completed in 1945, the dam stands at a height of 7 feet and has a storage capacity of 53 acre-feet. The dam, situated on the TR-LONG ISLAND SOUND river or stream, features a controlled spillway with a width of 4 feet, and has a low hazard potential.
This dam, with a surface area of 13 acres, provides important recreational opportunities in the area. While the condition assessment is currently not rated, the risk assessment for Fresh Pond Dam categorizes it as having a very high risk, with a DSAC assigned date not available. The dam is state regulated and inspected by the NYS DEC, with enforcement and permitting also overseen by state agencies.
Fresh Pond Dam is a significant landmark for water resource and climate enthusiasts, offering a glimpse into the history and management of dams in New York. With its unique design and purpose, this dam serves as a vital recreational asset while also posing potential risks that require ongoing monitoring and management to ensure the safety of surrounding communities and the environment.
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 Fresh Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Nissequogue River Near Smithtown Ny | 31 cfs | → |
| Cold Spring Brook At Cold Spring Harbor Ny | 2 cfs | → |
| Connetquot Bk Nr Central Islip Ny | 21 cfs | → |
| Carlls River At Babylon Ny | 15 cfs | → |
| Sampawams Creek At Babylon Ny | 9 cfs | → |
| Sasco Brook Near Southport | 5 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Fresh Pond Dam.
Boat launches
- Asharoken Avenue Asharoken
- Long Island Greenbelt Trail Suffolk County
- Scudder Park
- Long Beach Road Nissequogue
- Lloyd Harbor Road 72, Lloyd Harbor
Campgrounds
- Blydenburgh Park
- Park Shore Day Camp
- Battle Row
- Cathedral Pines County Park
- Southaven County Park
- Watch Hill Campgrounds
Fishing spots
Track Fresh 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 Fresh Pond Dam
Where does the data for Fresh 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 Fresh Pond Dam.