Allens Falls dam
Allens Falls
Allens Falls is a captivating hydroelectric dam located in West Stockholm, New York, along the West Branch St. Regis River. Built in 1991, this concrete gravity dam stands at 37 feet tall and spans 766 feet in length, with a storage capacity of 1780 acre-feet. The dam serves as a vital source of renewable energy, utilizing a spillway width of 556 feet to manage a maximum discharge of 29,205 cubic feet per second.
Managed by the Federal Energy Regulatory Commission, Allens Falls poses a high hazard potential and is inspected annually to ensure operational safety. Despite its high-risk designation, the dam's condition assessment remains unavailable, highlighting the need for ongoing risk management measures. This dam not only provides hydroelectric power but also contributes to flood control and water resource management in the region, making it a crucial infrastructure project for both energy and climate enthusiasts alike.
With its unique design and critical role in the local ecosystem, Allens Falls serves as a prime example of sustainable energy production and water resource management. As climate change continues to impact water availability and infrastructure resilience, the importance of dams like Allens Falls in providing clean energy and water regulation cannot be overstated. As enthusiasts of water resources and climate conservation, understanding and advocating for the safe and efficient operation of dams like Allens Falls is essential in promoting a sustainable future for generations to come.
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 Allens Falls -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| W Br St. Regis R Nr Parishville Ny | 406 cfs | → |
| Raquette River At South Colton Ny | 880 cfs | → |
| Raquette River At Raymondville Ny | 2,030 cfs | → |
| St. Regis River At Brasher Center Ny | 1,290 cfs | → |
| Grass River At Chase Mills Ny | 1,260 cfs | → |
| Little Salmon River At Bombay Ny | 166 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Allens Falls .
Boat launches
- Colton
- St Regis River
- Grass River
- Santa Clara Flow
- Wilson Hill Causeway Saint Lawrence County
- Ny 131 Saint Lawrence County
Campgrounds
- Higley Flow State Park
- Coles Creek State Park
- Upper Canada Sanctuary - St. Lawrence
- Robert Moses State Park
- Riverside/Cedar - St. Lawrence
- Mclaren Campsite - St. Lawrence
More reservoirs
Track Allens Falls 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 Allens Falls
Where does the data for Allens Falls 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 Allens Falls .