Summary
Built in 1850, this dam serves multiple purposes including fire protection, stock, and small fish pond, but its primary purpose is for recreation. With a height of 10 feet and a hydraulic height of 8 feet, Sleeper has a normal storage capacity of 3600 acre-feet and a maximum storage of 4200 acre-feet, covering a surface area of 2050 acres within a drainage area of 34 square miles.
Despite its historical significance and recreational value, Sleeper dam is currently in poor condition and has been deemed to have a significant hazard potential. The last inspection in September 2016 revealed its poor condition, and its Emergency Action Plan (EAP) has not been updated recently. The dam is state-regulated, with inspection, permitting, and enforcement conducted by the Maine Emergency Management Agency (MEMA). With its unique location and historical importance, Sleeper dam presents challenges in managing its risk and ensuring the safety of the surrounding community and environment.
Year Completed |
1850 |
Dam Length |
80 |
Dam Height |
10 |
River Or Stream |
Hooper Brook |
Primary Dam Type |
Stone |
Surface Area |
2050 |
Hydraulic Height |
8 |
Drainage Area |
34 |
Nid Storage |
4200 |
Structural Height |
10 |
Hazard Potential |
Significant |
Nid Height |
10 |
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.
Sleeper
Lake Street Sabattus