Summary
Completed in 1950, this Earth-type dam stands at a height of 15 feet and has a hydraulic height of 14 feet. The primary purpose of Old Spiro is water supply, with a normal storage capacity of 140 acre-feet and a maximum storage of 210 acre-feet.
Despite being classified as having a low hazard potential, Old Spiro is considered to have a very high risk due to its age and condition assessment being listed as "Not Rated." The dam features a controlled spillway and a single valve outlet gate. While it has not undergone recent inspection or assessment updates, Old Spiro remains an essential structure for water resource management in the region. Given its critical role in water supply, continued monitoring and maintenance are crucial to ensure the safety and efficiency of this aging infrastructure.
Year Completed |
1950 |
Dam Length |
2500 |
Dam Height |
15 |
River Or Stream |
TR-POTEAU RIV |
Primary Dam Type |
Earth |
Surface Area |
34 |
Hydraulic Height |
14 |
Nid Storage |
210 |
Structural Height |
14 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Poteau River Near Panama
|
483cfs |
James Fork Near Hackett
|
32cfs |
Arkansas River At Ft. Smith
|
21700cfs |
Lee Creek Near Short
|
97cfs |
Lee Creek At Short
|
28cfs |
Little Lee Creek Near Short
|
34cfs |
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.
Old Spiro