Sandy Point G.M.A. Reservoir Report
Nearby: Ulmer Brook Silver Lake
Last Updated: December 20, 2025
Sandy Point G.M.A., located in Waldo, Maine, is a state-regulated dam constructed in 1940 primarily for recreation purposes.
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Summary
This concrete dam stands at a height of 10 feet with a hydraulic height of 8 feet and a length of 130 feet, creating a reservoir with a normal storage capacity of 640 acre-feet. Situated on the TR-Penobscot River, this dam plays a vital role in providing recreational opportunities as well as supporting fish and wildlife habitats in the area.
Although the hazard potential of Sandy Point G.M.A. is rated as low, the dam has not been assessed for its current condition. Despite this, the state of Maine regulates, inspects, and enforces safety measures for this structure, ensuring its compliance with necessary standards. With a spillway width of 20 feet and no associated locks or outlet gates, the dam serves as a valuable asset in water resource management and conservation efforts along the Penobscot River.
While the dam's last inspection date is listed as December 31, 1899, the frequency of inspections is set at 12 months, indicating a commitment to monitoring its safety over time. As a key feature in the region's water infrastructure, Sandy Point G.M.A. contributes to the overall environmental health and recreational opportunities for residents and visitors alike. Its presence underscores the importance of effective dam management and maintenance in sustaining water resources and climate resilience in the area.
Year Completed |
1940 |
Dam Length |
130 |
Dam Height |
10 |
River Or Stream |
TR-Penobscot River |
Primary Dam Type |
Concrete |
Surface Area |
262 |
Hydraulic Height |
8 |
Nid Storage |
820 |
Structural Height |
10 |
Hazard Potential |
Low |
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.
Sandy Point G.M.A.