Central Nyack Dam dam
Central Nyack Dam
Central Nyack Dam, located in Rockland County, New York, is a critical structure owned by the local government and regulated by the New York State Department of Environmental Conservation. Completed in 2012, this earth-type dam stands at a height of 12.2 meters and serves as a flood risk reduction measure for the area. Despite its high hazard potential, the dam has been assessed to be in satisfactory condition as of July 2019, providing a level of reassurance to the community.
With a primary purpose of flood risk reduction, Central Nyack Dam plays a crucial role in protecting the surrounding area from potential water-related disasters. The dam features an uncontrolled spillway and has a moderate risk assessment rating of 3, indicating a level of preparedness and management measures in place. Regular inspections, with a frequency of every 2 years, ensure that the dam remains structurally sound and capable of fulfilling its intended function.
As a key component of the local water resource infrastructure, Central Nyack Dam stands as a testament to the importance of proactive maintenance and oversight in safeguarding against the impacts of climate change. Its presence highlights the ongoing efforts to mitigate flood risks and protect the community from the potential consequences of extreme weather events, making it a vital asset for water resource and climate enthusiasts alike.
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 Central Nyack Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Hackensack River At West Nyack Ny | 12 cfs | → |
| Pascack Brook At Park Ridge Nj | 7 cfs | → |
| Hackensack River At Rivervale Nj | 31 cfs | → |
| Pascack Brook At Westwood Nj | 31 cfs | → |
| Saddle River At Upper Saddle River Nj | 4 cfs | → |
| Mahwah River Near Suffern Ny | 7 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Central Nyack Dam.
Boat launches
- Croton Riverwalk Croton-On-Hudson
- Warburton Avenue 565, Hastings-On-Hudson
- Cortlandt Street Cortlandt
- Battlefield Road Town Of Stony Point
- Broadway Buchanan
- Hudson Avenue Peekskill
Campgrounds
- Croton Point Park
- Beaver Pond - Harriman State Park
- Beaver Pond Campsite
- Blue Mountain Reservation
- Camping For Hikers On Ballfield Graymoor Center
- Round Pond Military
Fishing spots
Track Central Nyack 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 Central Nyack Dam
Where does the data for Central Nyack 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 Central Nyack Dam.