Eden Mill Dam dam
Eden Mill Dam
Eden Mill Dam, located in Hanover Township, Morris County, New Jersey, is a privately owned concrete dam primarily used for water supply from the Whippany River. Standing at a height of 11.6 feet and with a length of 178 feet, this dam has a storage capacity of 43 acre-feet and serves a drainage area of 31.8 square miles. Despite its significant hazard potential and poor condition assessment, the dam is inspected every 2 years by the state regulatory agency, NJDEP, to ensure its safety and compliance with regulations.
The dam, constructed for water supply purposes, plays a crucial role in managing water resources in the region. Its location in the Whippany River watershed highlights its importance in providing water for various uses. The dam's last inspection in June 2020 revealed its poor condition, prompting the need for monitoring and potential rehabilitation efforts to address safety concerns. With a maximum discharge capacity of 129 cubic feet per second, the dam's role in flood control and water management cannot be understated.
As climate change impacts intensify, the maintenance and upkeep of dams like Eden Mill Dam become even more critical. With the potential for increased precipitation and extreme weather events, ensuring the integrity and functionality of water infrastructure is essential for safeguarding communities and the environment. By staying vigilant in monitoring and maintaining dams like Eden Mill, water resource and climate enthusiasts can contribute to sustainable water management practices in the face of a changing climate.
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 Eden Mill Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Whippany River At Morristown Nj | 22 cfs | → |
| Whippany River Near Morristown Nj | 7 cfs | → |
| Whippany River Near Pine Brook Nj | 32 cfs | → |
| Rockaway River Below Reservoir At Boonton Nj | 10 cfs | → |
| Rockaway River Above Reservoir At Boonton Nj | 472 cfs | → |
| Passaic River At Pine Brook Nj | 123 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Eden Mill Dam.
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 Eden Mill 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 Eden Mill Dam
Where does the data for Eden Mill 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 Eden Mill Dam.