Osborns Mills Dam dam
Osborns Mills Dam
Osborns Mills Dam, located in Spring Lake, New Jersey, serves as a vital recreational resource along Wreck Pond Brook. Owned by the local government, this earth dam stands at a height of 12 feet and stretches 450 feet in length, providing a storage capacity of 108 acre-feet and covering a surface area of 25 acres. Despite its significant hazard potential and poor condition assessment, the dam remains under state regulation, permitting, inspection, and enforcement by the New Jersey Department of Environmental Protection.
Although Osborns Mills Dam has not been modified in recent years, it is important to note that its emergency action plan (EAP) was last revised in February 2019. The dam's inspection frequency is set at every two years, with the most recent assessment conducted in October 2020. With Congressman Christopher H. Smith representing the area in Congressional District 04, efforts to manage the dam's risk and potential hazards are crucial to ensuring the safety of surrounding communities. Water resource and climate enthusiasts should monitor the ongoing regulatory oversight and maintenance of Osborns Mills Dam to safeguard both recreational activities and the environment in Monmouth County, New Jersey.
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 Osborns Mills Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Shark River Near Neptune City Nj | 3 cfs | → |
| Manasquan R Nr Allenwood Nj | 12 cfs | → |
| Jumping Brook Near Neptune City Nj | 2 cfs | → |
| Manasquan River At Squankum Nj | 27 cfs | → |
| North Branch Metedeconk River Near Lakewood Nj | 21 cfs | → |
| Swimming River Near Red Bank Nj | 4 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Osborns Mills Dam.
Boat launches
- Stockton Avenue Manasquan
- 7th Avenue Asbury Park
- River Lane 8, Long Branch
- Riverview Avenue Little Silver
- Battin Road 198, Fair Haven
- Garfield Avenue 230, Toms River
Track Osborns 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 Osborns Mills Dam
Where does the data for Osborns 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 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 Osborns Mills Dam.