Oknoname 063027 Reservoir Report
Nearby: Oknoname 063028 Coppedge Jack
Last Updated: December 6, 2025
Oknoname 063027 is a private dam located in Calvin, Oklahoma, with a low hazard potential and a very high risk assessment rating.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1970, this earth dam stands at a height of 22 feet and has a storage capacity of 130 acre-feet. It spans a length of 3310 feet and serves the primary purpose of "Other".
Owned privately, the dam is regulated by the Oklahoma Water Resources Board and is subject to state jurisdiction, permitting, inspection, and enforcement. The structure is situated on the TR-Canadian River in Hughes County and falls under the oversight of the Tulsa District of the US Army Corps of Engineers. The dam's spillway is controlled, with a width of 1 foot, and it features a single valve as an outlet gate.
Although the dam is currently in a "Not Rated" condition assessment status, the risk assessment indicates very high risk, necessitating careful monitoring and potential risk management measures in the future. With its critical location and potential impact on the surrounding area, Oknoname 063027 serves as a key water resource structure in the region for both water storage and flood control purposes.
Year Completed |
1970 |
Dam Length |
3310 |
Dam Height |
22 |
River Or Stream |
TR-CANADIAN RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
22 |
Nid Storage |
130 |
Structural Height |
22 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
22 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Canadian River At Calvin
|
361cfs |
Little River Near Sasakwa
|
12cfs |
North Canadian River Near Wetumka
|
209cfs |
Little River Near Tecumseh
|
8cfs |
North Canadian River At Shawnee
|
177cfs |
Blue River Near Connerville
|
54cfs |
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 063027