Hopkins Lake Dam dam
Hopkins Lake Dam
Hopkins Lake Dam, located in Haddonfield, New Jersey, along the Cooper River, is a significant earth dam standing at a height of 25 feet with a length of 210 feet. The dam primarily serves a recreational purpose, offering a serene environment for water resource and climate enthusiasts to enjoy. With a storage capacity of 24 acre-feet and a maximum discharge of 650 cubic feet per second, the dam plays a crucial role in regulating the flow of water in the area.
Despite its importance, the dam's condition assessment is rated as poor, indicating a need for maintenance and potential safety concerns. The hazard potential is classified as significant, highlighting the urgency of addressing any potential risks associated with the dam. The last inspection took place in July 2020, with an inspection frequency of every 2 years, pointing to the importance of regular monitoring and upkeep to ensure the safety and functionality of the structure.
As a focal point for recreation in the region, Hopkins Lake Dam stands as a vital water resource management infrastructure. With its location in Camden County, New Jersey, the dam serves as a reminder of the delicate balance between water conservation, climate considerations, and the need for regular maintenance to ensure the safety and well-being of the surrounding community.
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 Hopkins Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cooper River At Haddonfield Nj | 43 cfs | → |
| South Branch Pennsauken Creek At Cherry Hill Nj | 31 cfs | → |
| Frankford Creek At Castor Ave | 41 cfs | → |
| Schuylkill River At Philadelphia | 915 cfs | → |
| Pennypack Cr At Lower Rhawn St Bdg | 106 cfs | → |
| Tacony Creek At County Line | 23 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Hopkins Lake Dam.
Boat launches
- Creek Road Bellmawr
- Frankford Arsenal
- Lakeside Avenue 440, Deptford
- Tacony Boat Launch
- Linden Avenue
- Station Avenue
Campgrounds
- Tinicum Island Primitive Campsite
- Atsion - Wharton State Forest
- Lower Forge Camp
- Batona Camp
- Willow Pond Camp Military - Ft Dix
- Mullica River Campground
Fishing spots
Track Hopkins 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 Hopkins Lake Dam
Where does the data for Hopkins 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 Hopkins Lake Dam.