Oknoname 30055 Reservoir Report
Nearby: Karpis Pond No 2 Richard Phillips Dam
Last Updated: December 6, 2025
Oknoname 30055 is a privately owned structure located in Johnston, Oklahoma, along the Rock Creek river stream.
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Summary
Designed by USDA NRCS and regulated by the state agency OWRB, this recreational dam stands at a height of 14.4 feet and has a storage capacity of 307.8 acre-feet. Completed in 2002, it serves the primary purpose of recreation and has a surface area of 15.9 acres, with a drainage area of 465 square miles.
Despite its low hazard potential, Oknoname 30055 poses a very high risk, with a risk assessment rating of 1. However, the dam's condition assessment is marked as "Not Rated," indicating a lack of recent evaluation. The structure has not been inspected in the past five years, and there is no Emergency Action Plan (EAP) in place. While the dam meets state regulatory requirements, its risk management measures and overall risk characterization are unspecified, leaving room for potential improvements in safety and emergency preparedness.
For water resource and climate enthusiasts, Oknoname 30055 presents an intriguing case study of a privately owned recreational dam in Oklahoma with significant risk potential. The structure's design, location, and management raise questions about the effectiveness of regulatory oversight and emergency preparedness in safeguarding against potential hazards. As discussions around water resource management and climate adaptation continue to evolve, understanding the complexities of individual structures like Oknoname 30055 is crucial for ensuring the safety and sustainability of our water infrastructure.
Year Completed |
2002 |
Dam Length |
984 |
Dam Height |
14.4 |
River Or Stream |
ROCK CREEK |
Surface Area |
15.9 |
Hydraulic Height |
11.4 |
Drainage Area |
465 |
Nid Storage |
307.8 |
Structural Height |
17.4 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
17 |
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 |
Red River At Denison Dam Nr Denison
|
238cfs |
Washita River Near Dickson
|
322cfs |
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.
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Oknoname 30055