Ulmer Brook Reservoir Report
Nearby: Sandy Point G.M.A. Orland Village
Last Updated: December 20, 2025
Ulmer Brook, located in Hancock County, Maine, is a private earth dam completed in 1981 primarily for recreational purposes such as fishing and wildlife pond enjoyment.
°F
°F
mph
Wind
%
Humidity
Summary
With a structural height of 10 feet and a length of 400 feet, this dam holds a storage capacity of 68 acre-feet, with a normal storage level of 23 acre-feet. The dam has a surface area of 15 acres and a drainage area of 0.72 square miles, making it a significant water resource in the area.
Despite its recreational value, Ulmer Brook dam is currently assessed to be in poor condition, with a significant hazard potential. The last inspection in May 2017 revealed the need for improvements to meet safety standards. The dam's Emergency Action Plan (EAP) status and risk assessment are unclear, indicating a potential need for updated emergency preparedness measures to mitigate any potential risks associated with the dam's condition. With its location in Maine and the involvement of the Maine Emergency Management Agency (MEMA) in regulatory oversight, the future of Ulmer Brook's dam safety and management remains a critical concern for water resource and climate enthusiasts in the region.
In light of the dam's condition and hazard potential, stakeholders, including the private owners and regulatory agencies, may need to collaborate on necessary maintenance and improvement efforts to ensure the safety and sustainability of Ulmer Brook dam. Enhanced inspection frequency, risk assessments, and emergency preparedness measures could be essential steps to address the identified deficiencies and mitigate any potential risks associated with the dam. By prioritizing safety and compliance with regulatory standards, stakeholders can work towards preserving Ulmer Brook as a valuable water resource for recreational activities while safeguarding against any environmental or public safety concerns.
Year Completed |
1981 |
Dam Length |
400 |
Dam Height |
10 |
River Or Stream |
Ulmer Brook |
Primary Dam Type |
Earth |
Surface Area |
15 |
Drainage Area |
0.72 |
Nid Storage |
68 |
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.
Ulmer Brook