Manor Lake Reservoir Report
Last Updated: December 25, 2025
Manor Lake, also known as Mildred Osborn, is a privately owned reservoir located in Blount County, Alabama.
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Summary
Built in 1967 for recreational purposes, this earth dam stands at a height of 80 feet, with a hydraulic height of 73 feet. The reservoir has a normal storage capacity of 1483 acre-feet and a maximum storage of 2008 acre-feet, making it a significant water resource in the area.
With a high hazard potential and a condition assessment of "Not Rated," Manor Lake poses potential risks that require careful monitoring and management. Despite not being regulated by the state or federal agencies, the reservoir serves as a popular spot for recreational activities in the region. Situated near TR-GRAVES CREEK in SW LIBERTY, Manor Lake offers a tranquil retreat for water resource and climate enthusiasts to enjoy the beauty of nature while being mindful of its potential hazards.
As an integral part of the local landscape, Manor Lake provides a valuable opportunity for residents and visitors to appreciate the importance of water resources and their impact on the environment. With its rich history and scenic surroundings, this privately owned reservoir serves as a reminder of the delicate balance between human enjoyment and ecological preservation in the face of changing climate patterns.
Year Completed |
1967 |
Dam Length |
520 |
River Or Stream |
TR-GRAVES CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
73 |
Nid Storage |
2008 |
Structural Height |
80 |
Hazard Potential |
High |
Nid Height |
80 |
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.
Manor Lake