Collier Mills Dam dam
Collier Mills Dam
Collier Mills Dam, located in Jackson Township, New Jersey, stands as a vital structure along the Bordens Mill Branch river. Built in 1942, this earth dam serves primarily for recreation purposes, offering a serene environment for water resource and climate enthusiasts to enjoy. With a height of 9 feet and a length of 960 feet, the dam holds a storage capacity of 115 acre-feet, covering a surface area of 34 acres within a drainage area of 2.8 square miles.
Despite its age, Collier Mills Dam has been maintained by the New Jersey Department of Environmental Protection, ensuring its safety and functionality. However, the dam's condition assessment in 2006 revealed a poor rating, prompting the need for further inspection and potential repairs. Classified as having a low hazard potential, the dam is closely monitored, with inspections scheduled every four years to assess any risks and ensure public safety.
As a significant feature in the region, Collier Mills Dam plays a crucial role in water management and conservation efforts. Its historical significance and recreational value make it a must-see destination for those interested in learning about dam infrastructure and its impact on the surrounding environment.
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 Collier Mills Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Crosswicks Creek At Extonville Nj | 32 cfs | → |
| Greenwood Branch At New Lisbon Nj | 36 cfs | → |
| Mcdonalds Branch In Lebanon State Forest Nj | 1 cfs | → |
| Toms River Near Toms River Nj | 93 cfs | → |
| North Branch Rancocas Creek At Pemberton Nj | 51 cfs | → |
| North Branch Metedeconk River Near Lakewood Nj | 21 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Collier Mills Dam.
Boat launches
- Roebling Park In Nj
- Trenton Public Boat Ramp
- Garfield Avenue 230, Toms River
- Bayview Place Ocean Gate
- Levittown Lake
- Morrisville
Track Collier Mills 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 Collier Mills Dam
Where does the data for Collier Mills 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 Low 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 Collier Mills Dam.