Lake Parsippany East Dike No. 2 dam
Lake Parsippany East Dike No. 2
Lake Parsippany East Dike No. 2, located in Parsippany - Troy Hills, New Jersey, is a privately owned earth dam constructed in 1933 for recreational purposes. The dam stands at a height of 5 feet and spans a length of 320 feet, creating a reservoir with a storage capacity of 459 acre-feet and a surface area of 151 acres. It is regulated by the New Jersey Department of Environmental Protection (NJDEP) and undergoes regular inspections to ensure its safe operation.
Although primarily designed for recreation, Lake Parsippany East Dike No. 2 poses a high hazard potential due to its location along Eastmans Brook and its surrounding drainage area of 1.1 square miles. Despite this, the dam's condition is assessed as satisfactory as of the last inspection in October 2021. The emergency action plan (EAP) for the dam was last revised in 2010, indicating a need for updated preparedness measures in case of a potential breach or failure.
With Mikie Sherrill representing the 11th Congressional District of New Jersey, efforts to maintain and manage Lake Parsippany East Dike No. 2 are crucial in ensuring the safety and enjoyment of local residents. As climate change continues to impact water resources and infrastructure, the importance of proactive risk management and maintenance of dams like this one becomes increasingly vital in safeguarding 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 Lake Parsippany East Dike No. 2 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Whippany River At Morristown Nj | 22 cfs | → |
| Rockaway River Below Reservoir At Boonton Nj | 10 cfs | → |
| Rockaway River Above Reservoir At Boonton Nj | 472 cfs | → |
| Whippany River Near Pine Brook Nj | 32 cfs | → |
| Whippany River Near Morristown Nj | 7 cfs | → |
| Passaic River At Pine Brook Nj | 123 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Parsippany East Dike No. 2.
Boat launches
- Island Avenue Little Falls
- North Corporate Drive 2, Riverdale
- Lakeside Avenue Pompton Lakes
- Dell Avenue 9, Netcong
- Veterans Court Passaic
- Jefferson Lake Road Sussex County
Track Lake Parsippany East Dike No. 2 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 Parsippany East Dike No. 2
Where does the data for Lake Parsippany East Dike No. 2 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 High 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 Parsippany East Dike No. 2.