Mulligan Bog Reservoir Report
Nearby: Upper Spragues Mill
Last Updated: December 19, 2025
Mulligan Bog is a concrete dam located in Somerset, Maine, along the Mulligan Stream.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1960 for the primary purpose of recreation, this structure stands at a height of 14 feet with a hydraulic height of 8 feet. With a storage capacity of 240 acre-feet and a surface area of 270 acres, Mulligan Bog provides essential fish and wildlife habitat, as well as recreational opportunities for visitors to enjoy.
Managed by the State of Maine, Mulligan Bog is regulated by the Maine Emergency Management Agency (MEMA) and undergoes regular inspections to ensure its safety and structural integrity. Despite being rated as having a low hazard potential and not yet assessed for its condition, Mulligan Bog serves as a valuable water resource in the region. The dam's spillway width of 72 feet allows for controlled water release, contributing to the overall management of water levels and flow in the area.
For water resource and climate enthusiasts, Mulligan Bog offers a fascinating glimpse into the intersection of human engineering and natural ecosystems. As a key feature in the landscape of Somerset, Maine, this dam plays a crucial role in supporting local wildlife, providing recreational opportunities, and managing water resources effectively. With its rich history and ongoing maintenance efforts, Mulligan Bog stands as a testament to the importance of sustainable water management practices in the face of evolving environmental challenges.
Year Completed |
1960 |
Dam Length |
340 |
Dam Height |
14 |
River Or Stream |
Mulligan Stream |
Primary Dam Type |
Concrete |
Surface Area |
270 |
Hydraulic Height |
8 |
Drainage Area |
8 |
Nid Storage |
240 |
Structural Height |
14 |
Hazard Potential |
Low |
Nid Height |
14 |
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.
Mulligan Bog