Stony Lake Dam dam
Stony Lake Dam
Stony Lake Dam, located in Sandyston Township, Sussex County, New Jersey, is a state-regulated structure primarily used for recreation purposes. Built in 1926, this masonry dam stands at a height of 16.5 feet and has a storage capacity of 131 acre-feet, providing a surface area of 18 acres for water-related activities. The dam, situated on Stony Brook, serves as a focal point for outdoor enthusiasts seeking to enjoy the scenic beauty of the surrounding area.
Despite its age, Stony Lake Dam is deemed to have a low hazard potential and is currently in fair condition, as assessed in 2005. The dam undergoes inspections every four years, with the last assessment conducted in July 2005. While no spillway type is specified, the structure is equipped to manage any potential risks effectively. Additionally, the dam is under the jurisdiction of the New Jersey Department of Environmental Protection (NJDEP), ensuring that it is subject to state permitting, inspection, and enforcement protocols to maintain its safety and functionality.
Congressional District 05, represented by Josh S. Gottheimer, plays a role in overseeing the regulatory aspects of Stony Lake Dam. As a vital water resource within the region, the dam contributes to the local ecosystem and provides recreational opportunities for residents and visitors alike. With its historical significance and continued relevance in the present day, Stony Lake Dam stands as a testament to the importance of responsible water resource management in the face of changing climate conditions.
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 Stony Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Delaware River At Montague Nj | 5,290 cfs | → |
| Eb Paulins Kill Near Lafayette Nj | 16 cfs | → |
| Flat Brook Near Flatbrookville Nj | 47 cfs | → |
| Little Bush Kill At Edgemere | 10 cfs | → |
| Delaware River At Port Jervis Ny | 4,730 cfs | → |
| Pequest River At Huntsville Nj | 17 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Stony Lake Dam.
Boat launches
- Mcdade Recreational Trail Delaware
- West Shore Drive Stillwater Township
- Otter Lane 101, Dingman Township
- Sunrise Drive 299, Dingman Township
- Little Mud Pond
- Matamoras
Track Stony Lake 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 Stony Lake Dam
Where does the data for Stony Lake 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 Stony Lake Dam.