Summary
Completed in 1948, this earth dam stands 11 feet tall and spans 150 feet in length, with a storage capacity of 1100 acre-feet. The pond has a surface area of 257 acres and drains an area of 0.46 square miles, with Lily Brook serving as the primary river or stream.
Despite its significant hazard potential and poor condition assessment, Lily Pond is regularly inspected, permitted, and enforced by the Maine Emergency Management Agency (MEMA). The dam has a state-regulated status, with state jurisdiction, permitting, and inspection in place. The last inspection was conducted in April 2020, with a frequency of every 6 years, highlighting the importance of maintaining the safety and integrity of this water resource.
For water resource and climate enthusiasts, Lily Pond offers a glimpse into the critical infrastructure and management of water supply in Maine. With its historical significance dating back to the mid-20th century, this dam serves as a key component of the local ecosystem and water management system. As efforts continue to ensure the safety and functionality of Lily Pond, it stands as a reminder of the importance of sustainable water resource management in the face of changing climate conditions.
Year Completed |
1948 |
Dam Length |
150 |
Dam Height |
11 |
River Or Stream |
Lily Brook |
Primary Dam Type |
Earth |
Surface Area |
257 |
Drainage Area |
0.46 |
Nid Storage |
1100 |
Structural Height |
11 |
Hazard Potential |
Significant |
Nid Height |
11 |
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.
Lily Pond
Little Deer Isle Road 204, Deer Isle