Parker No.1 Reservoir Report
Nearby: Miller Dam Knowles Dam
Last Updated: December 7, 2025
Parker No.1 is a privately owned earth dam located in Ellis, Oklahoma, along the TR-RED BLUFF CR river stream.
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Summary
Constructed in 1962 by the USDA NRCS, this dam stands at a height of 31 feet with a hydraulic height of 27 feet, serving primarily for flood risk reduction purposes. With a storage capacity of 80 acre-feet, the dam covers a surface area of 2 acres and has a controlled spillway width of 1 foot. Despite its low hazard potential, the dam is under state regulation and inspection by the Oklahoma Water Resources Board.
Managed by the Natural Resources Conservation Service, Parker No.1 has a very high risk assessment rating of 1 due to its location and potential impact in the event of a failure. Although the dam's condition has not been rated, regular inspections are conducted every five years to ensure its structural integrity. With a single valve outlet gate, the dam has not been modified in recent years and does not have an Emergency Action Plan prepared. It is crucial for water resource and climate enthusiasts to monitor Parker No.1 closely to mitigate potential risks and ensure the safety of surrounding communities.
Parker No.1's presence in the Tulsa District and its role in flood risk reduction make it a critical infrastructure in Ellis, Oklahoma. As water resource and climate enthusiasts, it is essential to stay informed about the dam's condition, state regulation, and risk assessment to support effective management and maintenance practices. By understanding the dam's design, purpose, and associated risks, enthusiasts can contribute to the preservation of this vital water resource structure and safeguard the local environment from potential hazards.
Year Completed |
1962 |
Dam Length |
236 |
Dam Height |
31 |
River Or Stream |
TR-RED BLUFF CR |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
27 |
Nid Storage |
80 |
Structural Height |
31 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
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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.
Parker No.1