Manalapan Brook Pond Dam dam
Manalapan Brook Pond Dam
Manalapan Brook Pond Dam, located in Manalapan Township, New Jersey, is a significant local government-owned structure that serves primarily for recreational purposes. Built in 1924, this earth dam stands at a height of 14 feet and spans 225 feet in length, with a storage capacity of 61 acre-feet and a drainage area of 2.8 square miles. Despite its age, the dam is in poor condition, with a significant hazard potential, as indicated by its last inspection in May 2021.
Managed by the New Jersey Department of Environmental Protection (NJDEP), Manalapan Brook Pond Dam is subject to state regulations and inspections, ensuring its compliance with safety standards. The dam overlooks the Manalapan Brook and provides a surface area of 7 acres for recreational activities. However, with a poor condition assessment, the dam poses a potential risk, prompting the need for proper risk management measures to ensure the safety of the surrounding community and the environment.
As climate enthusiasts and water resource advocates, the condition of Manalapan Brook Pond Dam serves as a reminder of the importance of maintaining and monitoring infrastructure to prevent potential hazards and protect water resources. This dam's history, design, and current state highlight the ongoing challenges faced in managing aging structures and the necessity of proactive measures to address risks associated with deteriorating dams in the face of changing environmental 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 Manalapan Brook Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Big Brook Near Marlboro Nj | 4 cfs | → |
| Manasquan River At Squankum Nj | 27 cfs | → |
| Manalapan Brook At Spotswood Nj | 17 cfs | → |
| Deep Run At Old Bridge Nj | 3 cfs | → |
| Manasquan R Nr Allenwood Nj | 12 cfs | → |
| Crosswicks Creek At Extonville Nj | 32 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Manalapan Brook Pond Dam.
Boat launches
- Ravine Drive Matawan
- Middlesex County
- River Road Sayreville
- 7th Avenue Asbury Park
- Stockton Avenue Manasquan
- Riverview Avenue Little Silver
Track Manalapan Brook 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 Manalapan Brook Pond Dam
Where does the data for Manalapan Brook 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 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 Manalapan Brook Pond Dam.