Devoe Lake Dam dam
Devoe Lake Dam
Located in Spotswood, New Jersey, the Devoe Lake Dam is a concrete structure completed in 1935 with a primary purpose of recreation. Standing at a height of 15 feet and stretching 290 feet in length, the dam has a storage capacity of 391 acre-feet and serves the Manalapan Brook watershed. With a surface area of 19 acres and a drainage area of 41 square miles, the dam plays a crucial role in managing water resources and mitigating flood risks in the region.
Managed by the local government and regulated by the New Jersey Department of Environmental Protection, the Devoe Lake Dam is inspected every two years to ensure its structural integrity and safety. Despite its high hazard potential, the dam's condition assessment remains satisfactory, providing residents and stakeholders with confidence in its ability to withstand potential emergencies. Additionally, the dam has a designated emergency action plan in place to guide responses in case of any unforeseen events.
As a prominent feature in the Middlesex County landscape, the Devoe Lake Dam not only serves as a recreational site for locals but also contributes to the overall water resource management and flood control efforts in the area. With its historical significance and ongoing maintenance, the dam continues to be a vital asset in protecting the community and surrounding environment from potential water-related risks.
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 Devoe Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Manalapan Brook At Spotswood Nj | 27 cfs | → |
| Deep Run At Old Bridge Nj | 6 cfs | → |
| Lawrence Bk At Westons Mills Nj | 12 cfs | → |
| Big Brook Near Marlboro Nj | 5 cfs | → |
| Millstone River At Blackwells Mills Nj | 110 cfs | → |
| Delaware And Raritan Canal At Kingston Nj | 114 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Devoe Lake Dam.
⚓ Boat launches
- Middlesex County
- River Road Sayreville
- South 3rd Avenue Highland Park
- Ravine Drive Matawan
- Raritan Reach Road 28, South Amboy
- Second Street Perth Amboy
Track Devoe 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 Devoe Lake Dam
Where does the data for Devoe 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 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 Devoe Lake Dam.