Glendola Reservoir Dam dam
Glendola Reservoir Dam
The Glendola Reservoir Dam, located in Wall Township, New Jersey, is a privately owned earth dam that was completed in 1961 for the primary purpose of water supply. Standing at a height of 65 feet and stretching 4,500 feet in length, the dam has a storage capacity of 4,330 acre-feet and serves as a critical resource for the surrounding area. The reservoir created by the dam covers an area of 120 acres and is fed by the Robins Swamp Brook, with a drainage area of 0.3 square miles.
Managed by the New Jersey Department of Environmental Protection (NJDEP), the Glendola Reservoir Dam undergoes regular inspections, with the last assessment conducted in March 2020. The dam has a high hazard potential but is currently in satisfactory condition, meeting regulatory guidelines for safety. In the event of an emergency, the dam is equipped with an Emergency Action Plan (EAP) last revised in December 2014. With its vital role in water supply and its strategic location in Monmouth County, the Glendola Reservoir Dam plays a crucial role in water resource management and climate resilience efforts in the region.
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 Glendola Reservoir Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Shark River Near Neptune City Nj | 3 cfs | → |
| Jumping Brook Near Neptune City Nj | 2 cfs | → |
| Manasquan R Nr Allenwood Nj | 12 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 Glendola Reservoir Dam.
Boat launches
- 7th Avenue Asbury Park
- Stockton Avenue Manasquan
- River Lane 8, Long Branch
- Riverview Avenue Little Silver
- Battin Road 198, Fair Haven
- Ravine Drive Matawan
Track Glendola Reservoir 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 Glendola Reservoir Dam
Where does the data for Glendola Reservoir 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 High 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 Glendola Reservoir Dam.