Amwell No. 3 Dam dam
Amwell No. 3 Dam
Amwell No. 3 Dam, located in West Amwell Township, New Jersey, is a private earth dam completed in 1970 with a primary purpose of recreation. Standing at 26 feet tall and spanning 330 feet in length, this dam holds a storage capacity of 122 acre-feet and serves as a vital component in managing water resources in the area. The dam is situated on the Branch Alexauken Creek and is regulated by the New Jersey Department of Environmental Protection (NJDEP) to ensure proper inspection, permitting, and enforcement measures are in place.
With a significant hazard potential but a satisfactory condition assessment as of November 2020, Amwell No. 3 Dam plays a crucial role in flood control and water supply management in Hunterdon County, New Jersey. The dam's normal storage capacity of 62 acre-feet and a maximum discharge rate of 600 cubic feet per second highlight its importance in mitigating flooding risks and maintaining a stable water supply for the surrounding area. Regular inspections and emergency preparedness measures are in place to ensure the dam's safety and functionality.
As a key structure in the water resource management system, Amwell No. 3 Dam serves not only as a recreational spot but also as a critical component in safeguarding the community from potential hazards. With its strategic location and significant storage capacity, this dam exemplifies the importance of proper regulation, maintenance, and emergency preparedness in ensuring the resilience of water infrastructure in the face of changing climate 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 Amwell No. 3 Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Neshanic River At Reaville Nj | 8 cfs | → |
| South Branch Raritan River At Stanton Nj | 101 cfs | → |
| Tohickon Creek Near Pipersville | 23 cfs | → |
| Neshaminy Creek Near Penns Park | 87 cfs | → |
| Neshaminy Creek Near Rushland | 73 cfs | → |
| Stony Brook At Princeton Nj | 10 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Amwell No. 3 Dam.
Track Amwell No. 3 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 Amwell No. 3 Dam
Where does the data for Amwell No. 3 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 Amwell No. 3 Dam.