Chain No 3 Reservoir Report
Nearby: Chain No 8 Koehn
Last Updated: January 8, 2026
Chain No 3, located in Dewey, Oklahoma, is a privately owned earth dam designed by the USDA NRCS and completed in 1960.
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Summary
This dam, standing at 29 feet high with a length of 351 feet, serves the primary purpose of water resource management. It has a storage capacity of 170 acre-feet and a controlled spillway with a width of 1 foot.
Despite being classified as having a low hazard potential, Chain No 3 is deemed to have a very high risk level due to its age and condition assessment being marked as "Not Rated." The dam has one outlet gate in the form of a valve and is subject to state regulation, permitting, inspection, and enforcement by the OWRB. The surrounding area, with a surface area of 11 acres, is at risk of inundation in the event of a breach, highlighting the importance of ongoing risk management measures.
Overall, Chain No 3 plays a crucial role in water management within the area, but its age and condition warrant attention to ensure the safety and stability of the structure. With a designated inspection frequency of 5 years, it is essential for stakeholders to prioritize risk assessment and management to mitigate potential hazards and safeguard the surrounding community and environment.
Year Completed |
1960 |
Dam Length |
351 |
Dam Height |
29 |
River Or Stream |
TR-LONE CR |
Primary Dam Type |
Earth |
Surface Area |
11 |
Hydraulic Height |
25 |
Nid Storage |
170 |
Structural Height |
29 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Chain No 3