Cypress Bayou No 3 Reservoir Report
Nearby: Cypress Bayou No 2 Cypress Bayou No 1
Last Updated: December 26, 2025
Cypress Bayou No 3, located in Bossier, Louisiana, is a vital flood risk reduction structure managed by the local government and designed by the USDA NRCS.
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Summary
Completed in 1959, the earth dam stands at 28 feet tall and stretches 1815 feet in length, with a storage capacity of 405 acre-feet. The dam serves multiple purposes including flood risk reduction, fish and wildlife pond creation, and recreation, making it a valuable asset for the community.
With a high hazard potential and fair condition assessment as of June 2020, Cypress Bayou No 3 is subject to regular inspections and maintenance by the Louisiana Department of Transportation and Development. The dam features an uncontrolled spillway and a slide gate outlet, with a maximum discharge capacity of 3200 cubic feet per second. Despite its moderate risk rating, the structure plays a crucial role in protecting the surrounding area from flooding and ensuring water resource management in the region.
Managed by the Fort Worth District of the US Army Corps of Engineers, Cypress Bayou No 3 serves as a key component of the local water infrastructure, contributing to the overall resilience of the region in the face of changing climate conditions. As water resource and climate enthusiasts, understanding and supporting the maintenance and upkeep of structures like Cypress Bayou No 3 is essential for ensuring the sustainable management of water resources and mitigating the impacts of climate change on communities.
Year Completed |
1959 |
Dam Length |
1815 |
Dam Height |
28 |
River Or Stream |
TR-LITTLE CYP. BAYOU |
Primary Dam Type |
Earth |
Surface Area |
18 |
Hydraulic Height |
28 |
Drainage Area |
0.48 |
Nid Storage |
405 |
Structural Height |
32 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
32 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Red River At Spring Bank
|
1910cfs |
Bayou Dorcheat Near Springhill
|
39cfs |
Red Chute Bayou At Sligo
|
88cfs |
Big Cypress Ck Abv Sh 43 Nr Karnack
|
227cfs |
Sulphur Rv Nr Texarkana
|
576cfs |
Black Cypress Bayou At Jefferson
|
83cfs |
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.
Cypress Bayou No 3