Municipal Park Lake No 1 Reservoir Report

Last Updated: December 5, 2025

Municipal Park Lake No 1, located in Mobile, Alabama, is a man-made reservoir built in 1957 for purposes other than flood control or water supply.


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Summary

Owned by the local government, this Earth dam structure sits on Three Mile Creek and has a maximum storage capacity of 130 acre-feet. With a hydraulic height of 9 feet and a structural height of 13 feet, the dam spans 490 feet in length and has a normal storage capacity of 90 acre-feet.

Despite not being regulated by the state, Municipal Park Lake No 1 poses a significant hazard potential due to its condition being labeled as "Not Rated." Emergency action plans, risk assessments, and inundation maps are yet to be prepared for this dam, raising concerns for its management and safety. With a maximum discharge capacity of 2000 cubic feet per second, the lack of inspection frequency and condition assessment calls for heightened attention to ensure the dam's integrity and the protection of surrounding areas in case of a breach.

Year Completed

1957

Dam Length

490

River Or Stream

THREE MILE CREEK

Primary Dam Type

Earth

Hydraulic Height

9

Nid Storage

130

Structural Height

13

Hazard Potential

Significant

Nid Height

13
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.