Susan Case Dam Reservoir Report
Nearby: Lynn Lake Stuart Lake
Last Updated: December 21, 2025
Susan Case Dam, located in Fishville, Louisiana, is a private Earth dam primarily used for fire protection, stock, and small fish pond purposes.
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Summary
The dam, standing at 8 feet tall with a hydraulic height of 6 feet, spans 420 feet in length and has a storage capacity of 93 acre-feet. Situated on TR-Big Creek in Grant County, Louisiana, this structure is regulated by the Louisiana Department of Transportation and Development, with state permitting, inspection, and enforcement in place.
Despite its low hazard potential, Susan Case Dam is currently assessed as being in poor condition as of the last inspection in March 2021. The dam has a moderate risk rating of 3, prompting the need for risk management measures to ensure its continued safety and functionality. Although no specific modifications or improvements have been recorded, the structure's maintenance and upkeep are crucial to mitigate any potential risks associated with its current condition.
Water resource and climate enthusiasts interested in the maintenance and regulation of dams will find Susan Case Dam a compelling case study. With its unique design features, associated purposes, and state-regulated status, this structure serves as an important example of the intersection between human infrastructure and natural water systems. As efforts continue to address its current condition and risk assessment, the future of Susan Case Dam will be closely monitored for sustainable water resource management in the region.
Dam Length |
420 |
Dam Height |
8 |
River Or Stream |
TR-BIG CREEK |
Primary Dam Type |
Earth |
Surface Area |
23.3 |
Hydraulic Height |
6 |
Drainage Area |
1 |
Nid Storage |
93 |
Structural Height |
8 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
8 |
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.
Susan Case Dam