Hatfield Lake Reservoir Report
Nearby: Lake Murdock Boston Felt
Last Updated: December 18, 2025
Hatfield Lake in York, Maine, is a privately-owned reservoir that serves multiple purposes, including water storage and recreation.
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Summary
Built in 1968, this Earth-type dam stands at 21 feet high and has a length of 565 feet, creating a reservoir with a maximum storage capacity of 3,150 acre-feet and a normal storage of 2,850 acre-feet. The lake covers a surface area of 300 acres and is fed by a small drainage area of 1 square mile.
With its low hazard potential and a condition assessment that is currently not rated, Hatfield Lake is a crucial water resource in the region. Though last inspected in 1996, the dam is under state regulation by the Maine Emergency Management Agency (MEMA) with regular permitting, inspection, and enforcement practices in place. The spillway width of 125 feet ensures proper water flow management during high water events, contributing to the overall safety and functionality of the reservoir.
As climate change continues to impact water resources, Hatfield Lake stands as a testament to responsible water management and infrastructure development. Its location, design, and purpose highlight the importance of sustainable practices in maintaining water security and resilience in the face of changing environmental conditions. For water resource and climate enthusiasts, Hatfield Lake serves as a fascinating case study in dam engineering, regulation, and conservation efforts in the state of Maine.
Year Completed |
1968 |
Dam Length |
565 |
Dam Height |
21 |
River Or Stream |
Hatfield Lake |
Primary Dam Type |
Earth |
Surface Area |
300 |
Hydraulic Height |
21 |
Drainage Area |
1 |
Nid Storage |
3150 |
Structural Height |
21 |
Hazard Potential |
Low |
Nid Height |
21 |
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.
Hatfield Lake
Willand Pond boat launch