Upper Weir Lake Dam Reservoir Report
Last Updated: December 25, 2025
Upper Weir Lake Dam, located in East Baton Rouge, Louisiana, is a privately owned structure that serves as a fish and wildlife pond for recreational purposes.
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Summary
Completed in 1985, this earth dam stands at a height of 10 feet with a hydraulic height of 6 feet, providing a normal storage capacity of 120 acre-feet. The dam spans 260 feet in length and has a spillway width of 45 feet, making it a significant contributor to the local water resource management system.
Managed by the Louisiana Department of Transportation and Development, Upper Weir Lake Dam has been deemed to have a fair condition assessment as of the last inspection in February 2019. With a hazard potential rated as significant and a moderate risk level, the dam presents challenges that require diligent monitoring and risk management measures. Despite its relatively small size, the dam plays a crucial role in maintaining the ecological balance of the area and providing a source of recreation for the community.
As a vital component of the Tr-Amite River watershed, Upper Weir Lake Dam serves as a reminder of the importance of sustainable water resource management in the face of changing climate patterns. With its strategic location and function, the dam stands as a beacon for water and climate enthusiasts, showcasing the delicate balance between human development and environmental conservation in the ever-evolving landscape of Louisiana's water infrastructure.
Year Completed |
1985 |
Dam Length |
260 |
Dam Height |
10 |
River Or Stream |
TR-AMITE RIVER |
Primary Dam Type |
Earth |
Surface Area |
20 |
Hydraulic Height |
6 |
Drainage Area |
1 |
Nid Storage |
800 |
Structural Height |
10 |
Hazard Potential |
Significant |
Foundations |
Soil |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Amite River Near Denham Springs
|
587cfs |
Amite River At Port Vincent
|
1070cfs |
Comite River Near Comite
|
142cfs |
Mississippi River At Baton Rouge
|
134000cfs |
Tickfaw River At Holden
|
176cfs |
Byu Lafourche @ Donaldsonville
|
505cfs |
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.
Upper Weir Lake Dam