Janie Cornell Reservoir Report
Nearby: Haskett Gerrong Dam
Last Updated: December 5, 2025
Janie Cornell is a privately owned dam located in Custer, Oklahoma, along the Washita River.
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Summary
Designed by USDA NRCS and completed in 2006, this Earth-type dam stands at a height of 28.7 feet and stretches 500 feet in length, with a storage capacity of 26 acre-feet and a drainage area of 0.33 square miles. Despite being classified as having a low hazard potential, the dam has a moderate risk assessment rating of 3, indicating a need for ongoing monitoring and management measures.
Managed by the Oklahoma Water Resources Board, Janie Cornell is subject to state regulation, permitting, inspection, and enforcement. The dam's primary purpose is classified as "Other," with a spillway type of "Uncontrolled" and a spillway width of 10 feet. While the dam's condition assessment is currently listed as "Not Rated," it has a scheduled inspection frequency of every 5 years, with the last inspection taking place in July 2011. Despite its low hazard potential, the moderate risk assessment suggests a need for continued vigilance in ensuring the safety and stability of the structure.
In the event of an emergency, the dam's Emergency Action Plan (EAP) status is currently listed as not prepared, highlighting a potential area for improvement in terms of emergency response readiness. Overall, Janie Cornell serves as a key water resource infrastructure in the region, providing storage and flood control benefits along the Washita River, while also highlighting the importance of ongoing monitoring and management to ensure its continued safety and reliability for the community and environment.
Year Completed |
2006 |
Dam Length |
500 |
Dam Height |
28.7 |
River Or Stream |
WASHITA RIVER |
Primary Dam Type |
Earth |
Surface Area |
4.4 |
Drainage Area |
0.33 |
Nid Storage |
26 |
Hazard Potential |
Low |
Nid Height |
29 |
Seasonal Comparison
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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.
Janie Cornell