Pennington Lake Reservoir Report
Nearby: University Lake Highland Lakes
Last Updated: December 25, 2025
Pennington Lake in Baton Rouge, Louisiana, is a captivating water resource that serves as a Fish and Wildlife Pond, offering recreational opportunities as well.
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Summary
The lake, completed in 1993, boasts a dam height of 21 feet and a storage capacity of 205 acre-feet. With a surface area of 18.2 acres and a drainage area of 2.66 square miles, Pennington Lake provides a serene oasis for both wildlife and visitors alike.
Managed by the Louisiana Department of Transportation and Development, Pennington Lake has a high hazard potential but is currently in satisfactory condition, as per the last inspection in December 2020. The spillway type is uncontrolled, with a spillway width of 3 feet, and the outlet gates are Vertical Lift. Located in the East Baton Rouge County, the lake sits on the TR-DAWSON CREEK and offers a maximum discharge of 79 cubic feet per second, making it a vital component of the local water management system.
With its picturesque setting and important role in supporting fish and wildlife, Pennington Lake stands as a valuable asset for the community and a prime example of sustainable water resource management. Climate and water enthusiasts will find this lake an intriguing subject of study, with its unique design features and environmental significance.
Year Completed |
1993 |
Dam Length |
2400 |
Dam Height |
21 |
River Or Stream |
TR-DAWSON CREEK |
Primary Dam Type |
Earth |
Surface Area |
18.2 |
Hydraulic Height |
18 |
Drainage Area |
2.66 |
Nid Storage |
205 |
Structural Height |
21 |
Outlet Gates |
Vertical Lift |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Mississippi River At Baton Rouge
|
134000cfs |
Comite River Near Comite
|
142cfs |
Amite River Near Denham Springs
|
587cfs |
Amite River At Port Vincent
|
1070cfs |
Byu Lafourche @ Donaldsonville
|
505cfs |
Bayou Lafourche Sw Of Donaldsonville
|
208cfs |
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.
Pennington Lake