Summary
Standing at 23 feet tall with a length of 757 feet, this timber crib dam has a storage capacity of 2000 acre-feet and a maximum discharge of 64,000 cubic feet per second. Despite its age, the dam has a low hazard potential and is under the jurisdiction of the Federal Energy Regulatory Commission.
The dam, with its rockfill and timber crib construction, plays a crucial role in water resource management and renewable energy production in the area. With a moderate risk assessment score of 3, the Riley dam is subject to regular inspections and emergency action planning to ensure the safety of the surrounding communities in the event of a dam failure. It is important for water resource and climate enthusiasts to stay informed about the condition and maintenance of structures like Riley dam to support sustainable water management practices and mitigate potential risks associated with aging infrastructure.
As a private-owned facility, Riley dam showcases the intersection of historical engineering achievements with modern-day environmental stewardship. With its strategic location and design, the dam not only generates hydroelectric power but also provides flood control and water storage services for the region. By understanding the importance of structures like Riley dam and advocating for responsible water resource management, enthusiasts can contribute to the preservation of our natural ecosystems and the resilience of our infrastructure in the face of a changing climate.
Year Completed |
1897 |
Dam Length |
757 |
Dam Height |
23 |
River Or Stream |
Androscoggin River |
Primary Dam Type |
Timber Crib |
Surface Area |
578 |
Drainage Area |
2440 |
Nid Storage |
2000 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
23 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
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. Investigations and studies are necessary.
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.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams 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, environment 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.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Riley