Union Mill Lake Dam dam
Union Mill Lake Dam
Union Mill Lake Dam, located in Evesham Township, New Jersey, is a private-owned structure primarily used for recreation purposes. The dam, classified as an Earth type, stands at a height of 12.5 feet and has a storage capacity of 73 acre-feet, providing a serene surface area of 4 acres for visitors to enjoy. Despite its recreational appeal, the dam poses a significant hazard potential with a poor condition assessment, highlighting the need for regular inspections and maintenance.
Managed by the New Jersey Department of Environmental Protection, Union Mill Lake Dam falls under state jurisdiction with regulatory agencies overseeing permitting, inspection, and enforcement activities. The dam's last inspection in March 2021 revealed its poor condition, prompting the need for ongoing risk assessment and management measures to ensure public safety. Additionally, the dam lacks an Emergency Action Plan (EAP) and inundation maps, indicating a need for enhanced emergency preparedness protocols.
With its picturesque location along Barton Run-TR, Union Mill Lake Dam serves as a popular recreational spot in Burlington County, New Jersey. As climate change impacts water resources and infrastructure resilience, the dam's significance in both recreational and safety aspects underscores the importance of proactive maintenance and risk mitigation efforts. As water resource and climate enthusiasts, understanding the complexities of managing structures like Union Mill Lake Dam is crucial for fostering sustainable practices and safeguarding our natural environment for 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 Union Mill Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cooper River At Haddonfield Nj | 8 cfs | → |
| South Branch Pennsauken Creek At Cherry Hill Nj | 2 cfs | → |
| Great Egg Harbor R Nr Sicklerville Nj | 4 cfs | → |
| South Branch Rancocas Creek At Vincentown Nj | 16 cfs | → |
| Great Egg Harbor R Nr Blue Anchor Nj | 16 cfs | → |
| North Branch Rancocas Creek At Pemberton Nj | 51 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Union Mill Lake Dam.
Boat launches
- Lakeside Avenue 440, Deptford
- Creek Road Bellmawr
- Frankford Arsenal
- Tacony Boat Launch
- Linden Avenue
- Station Avenue
Campgrounds
- Atsion - Wharton State Forest
- Lower Forge Camp
- Batona Camp
- Mullica River Campground
- Willow Pond Camp Military - Ft Dix
- Tinicum Island Primitive Campsite
Fishing spots
Track Union Mill 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 Union Mill Lake Dam
Where does the data for Union Mill 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 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 Union Mill Lake Dam.