Alna Wcs Reservoir Report
Nearby: Head Tide Dresden Bog
Last Updated: December 18, 2025
Alna Wcs, located in Alna, Maine, is a state-regulated dam on the TR-Sheepscot River primarily used for recreation, specifically for fish and wildlife pond activities.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1950, this concrete dam stands at 7 feet high with a hydraulic height of 4 feet, spanning a length of 340 feet. It has a storage capacity of 230 acre-feet, with a normal storage level of 72 acre-feet and a surface area of 55 acres.
With a low hazard potential and a condition assessment that is currently unrated, Alna Wcs is inspected on a yearly basis to ensure its structural integrity and safety. The dam is under the jurisdiction of MEMA, the state regulatory agency, and has state permitting, inspection, and enforcement in place. The spillway width of 30 feet allows for controlled release of excess water, mitigating the risk of flooding downstream. Enthusiasts of water resources and climate will find Alna Wcs an interesting site for its recreational purpose and the management measures in place to ensure its safety and functionality.
Year Completed |
1950 |
Dam Length |
340 |
Dam Height |
7 |
River Or Stream |
TR-Sheepscot |
Primary Dam Type |
Concrete |
Surface Area |
55 |
Hydraulic Height |
4 |
Nid Storage |
230 |
Structural Height |
7 |
Hazard Potential |
Low |
Nid Height |
7 |
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.
Alna Wcs