Lake Juliet Dam dam
Lake Juliet Dam
Lake Juliet Dam is a historic structure located in Denville, New Jersey, along the West Branch Stone Brook. Built in 1919, this earth dam stands at a height of 12 feet and stretches for 375 feet, providing recreational opportunities for visitors in the area. With a storage capacity of 75 acre-feet, the dam serves as a popular spot for outdoor activities and relaxation.
Despite its scenic beauty and recreational value, Lake Juliet Dam is facing significant challenges in terms of its condition assessment. The dam has been rated as having poor condition, with a hazard potential classified as significant. Regular inspections are conducted, with the last one taking place in September 2020, highlighting the need for ongoing maintenance and potential risk management measures to ensure the safety of the surrounding community.
Owned by a private entity, Lake Juliet Dam falls under state jurisdiction and is regulated by the New Jersey Department of Environmental Protection. Its primary purpose remains focused on recreation, offering a serene escape for visitors looking to enjoy the natural beauty of Morris County. As discussions continue around its maintenance and future management, it is crucial to prioritize the safety and preservation of this beloved water resource for generations to come.
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 Juliet Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Rockaway River Above Reservoir At Boonton Nj | 472 cfs | → |
| Pequannock R At Macopin Intake Dam Nj | 6 cfs | → |
| Rockaway River Below Reservoir At Boonton Nj | 10 cfs | → |
| Pequannock River At Riverdale Nj | 12 cfs | → |
| Pompton River At Pompton Plains Nj | 126 cfs | → |
| Green Pond Brook At Picatinny Arsenal Nj | 2 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Juliet Dam.
Boat launches
- North Corporate Drive 2, Riverdale
- Lakeside Avenue Pompton Lakes
- Island Avenue Little Falls
- Greenwood Lake Turnpike Ringwood
- Ringwood-Ramapo Trail Ringwood
- Dell Avenue 9, Netcong
Track Lake Juliet 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 Juliet Dam
Where does the data for Lake Juliet 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 Juliet Dam.