Smith Reservoir Report
Nearby: Hamilton West Dam Hamilton East Dam
Last Updated: December 6, 2025
Smith is a private dam located in Johnston, Oklahoma, specifically in the city of Fillmore.
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Summary
Built in 1968, this earth-type dam serves primarily for irrigation purposes, with a height of 18 feet and a storage capacity of 90 acre-feet. The dam spans 510 feet in length and has a controlled spillway with a width of 1 foot. Despite being classified as having a low hazard potential, Smith poses a very high risk due to its age and condition assessment not being rated.
Operated by the Oklahoma Water Resources Board (OWRB), Smith is regulated, permitted, inspected, and enforced by the state, ensuring its compliance with safety standards. The dam's design includes stone core types and a soil foundation, with a single valve outlet gate. While the dam has not been modified in recent years, it has a history of regular inspections every 5 years, with the last one conducted in October 2009. Given its risk level and the potential implications on the surrounding area, it is crucial for water resource and climate enthusiasts to monitor Smith's condition and management closely to prevent any potential disasters.
Year Completed |
1968 |
Dam Length |
510 |
Dam Height |
18 |
River Or Stream |
TR-SANDY CR |
Primary Dam Type |
Earth |
Surface Area |
8 |
Hydraulic Height |
16 |
Nid Storage |
90 |
Structural Height |
18 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
18 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Blue River Near Connerville
|
54cfs |
Pennington Creek Near Reagan
|
7cfs |
Clear Boggy Creek Near Caney
|
423cfs |
Blue River Near Blue
|
58cfs |
Washita River Near Dickson
|
322cfs |
Red River At Denison Dam Nr Denison
|
238cfs |
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.
Smith