Oknoname 21978 Reservoir Report
Nearby: Mike Loftis City Of Blackwell
Last Updated: December 21, 2025
Oknoname 21978, located in Kay County, Oklahoma, is a local government-owned earth dam built in 1980 for the primary purpose of water supply.
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Summary
Standing at a height of 15 feet with a length of 800 feet, this dam on the TR-Chickashia River has a storage capacity of 90 acre-feet and covers a surface area of 4 acres. With a controlled spillway and one outlet valve, this dam is regulated, inspected, and enforced by the Oklahoma Water Resources Board, ensuring its safe operation and maintenance.
Despite being classified as having a low hazard potential and not yet rated for its condition assessment, Oknoname 21978 is considered to have a very high risk due to its location and potential impact in case of failure. The dam has undergone inspections every five years, with the last one conducted in October 2011. While an emergency action plan (EAP) has not been prepared or updated for this dam, it meets regulatory guidelines and has not required any significant risk management measures so far.
As a crucial water resource infrastructure in the area, Oknoname 21978 plays a vital role in providing water supply for the community. With its strategic location and design specifications, this dam serves as a key asset in water management and climate resilience efforts in Oklahoma.
Year Completed |
1980 |
Dam Length |
800 |
Dam Height |
15 |
River Or Stream |
TR-CHICKASHIA RIVER |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
15 |
Nid Storage |
90 |
Structural Height |
15 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Chikaskia River Near Blackwell
|
199cfs |
Salt Fork Arkansas River At Tonkawa
|
368cfs |
Arkansas R At Arkansas City
|
775cfs |
Chikaskia R Nr Corbin
|
139cfs |
Slate C At Wellington
|
15cfs |
Walnut R At Winfield
|
279cfs |
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.
Oknoname 21978