High Falls Dam At Copenhagen dam
High Falls Dam At Copenhagen
High Falls Dam at Copenhagen is a privately owned concrete dam located on the Deer River in Lewis, New York. Completed in 1909, this hydroelectric dam stands at a height of 25 feet and spans 175 feet in length. With a maximum storage capacity of 33 acre-feet and a drainage area of 192 square miles, the dam serves as a significant structure for water resource management in the region.
The dam features an uncontrolled spillway with a width of 70 feet, posing a significant hazard potential. Although the condition assessment is not rated and the last inspection was conducted in 2008, the risk assessment is moderate (3). The dam is regulated by the New York State Department of Environmental Conservation, which oversees permitting, inspection, and enforcement to ensure its safe operation and compliance with state regulations.
High Falls Dam at Copenhagen is a noteworthy site for water resource and climate enthusiasts, offering insights into the historical development of hydroelectric infrastructure in the region. With its strategic location on the Deer River and its role in water storage and management, the dam serves as a key player in the local ecosystem and hydroelectric industry. As efforts continue to assess and manage the risks associated with the dam, its significance in the broader context of water resource management and climate resilience remains a topic of interest for researchers and stakeholders 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 High Falls Dam At Copenhagen -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Beaver River At Croghan Ny | 559 cfs | → |
| Black River At Watertown Ny | 3,420 cfs | → |
| Independence River At Donnattsburg Ny | 134 cfs | → |
| Sandy Creek Near Adams Ny | 186 cfs | → |
| West Branch Oswegatchie R Nr Harrisville Ny | 523 cfs | → |
| Salmon River At Pineville Ny | 544 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near High Falls Dam At Copenhagen.
Boat launches
Campgrounds
- Remington Park Rv Military - Fort Drum
- Whetstone Gulf State Park
- Westcott Beach State Park
- Southwick Beach State Park
- Long Point State Park
Track High Falls Dam At Copenhagen 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 High Falls Dam At Copenhagen
Where does the data for High Falls Dam At Copenhagen 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 High Falls Dam At Copenhagen.