Port Jervis Reservoir #3 Dike dam
Port Jervis Reservoir #3 Dike
Port Jervis Reservoir #3 Dike, located in Port Jervis, New York, is a vital structure owned by the local government and regulated by the NYS DEC for water supply purposes. Built in 1912, this earth dam stands at a height of 12 feet and spans 970 feet in length, providing a maximum storage capacity of 1570 acre-feet. The reservoir covers a surface area of 71 acres and is situated along the TR-DELAWARE RIVER, making it a crucial component of the region's water resource infrastructure.
Despite its fair condition assessment and high hazard potential, the dam has undergone regular inspections, with the latest conducted in December 2020. The emergency action plan (EAP) has been prepared and updated to ensure public safety in case of any unforeseen events. With a risk assessment rating of High (2), the dam is subject to heightened monitoring and risk management measures to mitigate potential hazards. The dam is not under the jurisdiction of the US Army Corps of Engineers, and its operation and maintenance fall under the purview of the local government.
In light of its historical significance and critical role in water supply management, Port Jervis Reservoir #3 Dike stands as a testament to the engineering prowess of its time. As climate change continues to impact water resources, ensuring the safety and integrity of such structures becomes paramount. With ongoing inspections, risk assessments, and emergency preparedness measures in place, the dam serves as a crucial lifeline for the community, highlighting the importance of sustainable water resource management in the face of evolving environmental challenges.
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 Port Jervis Reservoir #3 Dike -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Delaware River At Port Jervis Ny | 3,490 cfs | → |
| Neversink River At Godeffroy Ny | 300 cfs | → |
| Mongaup River Near Mongaup Ny | 205 cfs | → |
| Delaware River At Montague Nj | 3,950 cfs | → |
| Shohola Creek Near Walker Lake | 58 cfs | → |
| Neversink River At Bridgeville Ny | 136 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Port Jervis Reservoir #3 Dike.
Boat launches
- Matamoras
- Plank Road Town Of Forestburgh
- Butler Court Town Of Mamakating
- Town Of Mamakating
- Winding Waters Trail Town Of Warwick
- Starlight Road 55, Monticello
Track Port Jervis Reservoir #3 Dike 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 Port Jervis Reservoir #3 Dike
Where does the data for Port Jervis Reservoir #3 Dike 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 Port Jervis Reservoir #3 Dike.