Lake Stockholm Dam dam
Lake Stockholm Dam
Lake Stockholm Dam, located in Sussex, New Jersey, is a private earth dam completed in 1920 for recreational purposes. The dam has a height of 16 feet and a length of 630 feet, creating a surface area of 33 acres and a storage capacity of 300 acre-feet. It is situated on a branch of the Pequannock River and is regulated by the New Jersey Department of Environmental Protection.
Despite being classified as having a significant hazard potential, the dam is currently in fair condition as of the last inspection in December 2020. The emergency action plan was last revised in September 2021, and the dam has a designated inspection frequency of every two years. The dam's spillway type, spillway width, and outlet gates information are not specified in the data, suggesting a need for further investigation of its hydraulic design and safety features.
With its picturesque location in Hardyston Township and the surrounding recreational activities it offers, Lake Stockholm Dam is a vital water resource for the community. However, ongoing monitoring and maintenance are essential to ensure the safety and integrity of the dam for both residents and visitors enjoying the recreational opportunities it provides along the Pequannock River.
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 Lake Stockholm Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Pequannock R At Macopin Intake Dam Nj | 6 cfs | → |
| Green Pond Brook At Picatinny Arsenal Nj | 2 cfs | → |
| Green Pd Bk Bl Picatinny Lk At Picatinny Ars Nj | 3 cfs | → |
| Eb Paulins Kill Near Lafayette Nj | 10 cfs | → |
| West Brook Near Wanaque Nj | 6 cfs | → |
| Wanaque River At Awosting Nj | 9 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Stockholm Dam.
Boat launches
- Greenwood Lake Turnpike Ringwood
- North Corporate Drive 2, Riverdale
- Lakeside Avenue Pompton Lakes
- Jefferson Lake Road Sussex County
- Dell Avenue 9, Netcong
- Winding Waters Trail Town Of Warwick
Track Lake Stockholm 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 Lake Stockholm Dam
Where does the data for Lake Stockholm 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 Significant 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 Lake Stockholm Dam.