Graham Dam Reservoir Report
Nearby: Armstrong Dam Joe Mitcham Dam
Last Updated: December 9, 2025
Graham Dam, located in Vienna, Louisiana, serves as a vital water resource for the surrounding area.
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Summary
Built in 1976 by the USDA NRCS, this earth dam stands at a height of 14 feet and has a length of 468 feet. The primary purpose of Graham Dam is to provide a fish and wildlife pond, while also serving functions such as fire protection, stock, and recreation.
With a storage capacity of 103 acre-feet, Graham Dam plays a crucial role in managing water levels and ensuring the availability of water for various uses. The dam's spillway, with a width of 80 feet, helps regulate water flow during periods of high discharge. Despite being classified as having a low hazard potential, the dam's condition assessment is rated as poor, highlighting the need for ongoing maintenance and improvements to ensure its long-term safety and effectiveness.
As climate change continues to impact water resources and ecosystems, Graham Dam remains a key infrastructure for supporting biodiversity and recreational activities in the area. With its moderate risk assessment rating, there is a growing recognition of the importance of investing in the upkeep and modernization of dams like Graham to adapt to changing environmental conditions and ensure sustainable water management practices for the future.
Year Completed |
1976 |
Dam Length |
468 |
Dam Height |
14 |
River Or Stream |
TR-CYPRESS CREEK |
Primary Dam Type |
Earth |
Surface Area |
15 |
Hydraulic Height |
14 |
Drainage Area |
0.41 |
Nid Storage |
103 |
Structural Height |
17 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
17 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Corney Bayou Near Lillie
|
169cfs |
Saline Bayou Near Lucky
|
38cfs |
Dugdemona River Near Joyce
|
248cfs |
Bayou Lafourche Near Crew Lake
|
625cfs |
Bayou Dorcheat Near Springhill
|
191cfs |
Boeuf River Nr Girard
|
42cfs |
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.
Graham Dam