Lake Hudsonia Dam dam
Lake Hudsonia Dam
Lake Hudsonia Dam in Morris County, New Jersey, stands as a significant earth dam primarily designed for recreational purposes. With a dam height of 10 feet and a length of 440 feet, it impounds Hibernia Creek, creating a reservoir with a normal storage capacity of 56 acre-feet and a surface area of 11 acres. Despite its recreational focus, the dam also serves as a critical water resource for the region, with a drainage area of 1.6 square miles and the ability to discharge up to 76 cubic feet per second.
However, concerns arise regarding the dam's condition assessment, which has been rated as poor, with a significant hazard potential. The last inspection in November 2020 highlighted the urgent need for maintenance and safety improvements. The dam is regulated by the New Jersey Department of Environmental Protection (NJDEP), and it undergoes state permitting, inspection, and enforcement processes. The dam's emergency action plan (EAP) status and risk management measures remain unclear, raising questions about the preparedness for potential incidents.
With its location in Rockaway Township and proximity to Congressional District 11 in New Jersey, Lake Hudsonia Dam represents a valuable yet vulnerable asset. As water resource and climate enthusiasts, it is crucial to advocate for proper maintenance, monitoring, and risk mitigation strategies to ensure the safety and sustainability of this vital infrastructure. The collaboration between local government agencies, regulatory bodies, and the community is essential to safeguarding Lake Hudsonia Dam and its surrounding environment for current and future generations.
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 Hudsonia Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Green Pond Brook At Picatinny Arsenal Nj | 2 cfs | → |
| Green Pd Bk Bl Picatinny Lk At Picatinny Ars Nj | 1 cfs | → |
| Pequannock R At Macopin Intake Dam Nj | 6 cfs | → |
| Rockaway River Above Reservoir At Boonton Nj | 472 cfs | → |
| Rockaway River Below Reservoir At Boonton Nj | 10 cfs | → |
| Musconetcong River At Outlet Of Lake Hopatcong Nj | 10 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Hudsonia Dam.
Boat launches
- North Corporate Drive 2, Riverdale
- Dell Avenue 9, Netcong
- Lakeside Avenue Pompton Lakes
- Jefferson Lake Road Sussex County
- Island Avenue Little Falls
- Greenwood Lake Turnpike Ringwood
Track Lake Hudsonia 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 Lake Hudsonia Dam
Where does the data for Lake Hudsonia 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 Lake Hudsonia Dam.