Istrouma Lake Dam Reservoir Report
Nearby: Lake Tigator Mcgee Lake
Last Updated: December 25, 2025
Istrouma Lake Dam in Blairstown, Louisiana, is a private structure with a primary purpose of serving as a fish and wildlife pond, as well as for recreation.
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Summary
Built in 1959 by the USDA NRCS, this earth dam stands at a height of 15 feet and spans 2400 feet in length. It holds a maximum storage capacity of 171 acre-feet and covers a surface area of 25 acres, with a drainage area of 0.45 square miles.
Despite its low hazard potential, the dam is currently in poor condition and is classified as having a moderate risk level. The last inspection in February 2019 revealed the need for improvements. The dam's spillway is uncontrolled, with a width of 70 feet, and its design includes stone core types and soil foundations. The dam's location in East Feliciana County, along the TR-Sandy Creek, highlights its importance in water resource management and wildlife conservation efforts in the region. Climate and water resource enthusiasts will find Istrouma Lake Dam a fascinating site for studying the intersection of infrastructure, conservation, and environmental stewardship.
Year Completed |
1959 |
Dam Length |
2400 |
Dam Height |
12 |
River Or Stream |
TR-SANDY CREEK |
Primary Dam Type |
Earth |
Surface Area |
25 |
Hydraulic Height |
12 |
Drainage Area |
0.45 |
Nid Storage |
171 |
Structural Height |
15 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Amite River Near Darlington
|
299cfs |
Comite River Near Olive Branch
|
65cfs |
Tickfaw River At Liverpool
|
47cfs |
Comite River Near Comite
|
142cfs |
Amite River Near Denham Springs
|
587cfs |
Tickfaw River At Holden
|
176cfs |
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.
Istrouma Lake Dam