Nuttal No.1 Reservoir Report
Nearby: Brown No.1 Mike Wilson Gss 1
Last Updated: December 31, 2025
Located in Ellis County, Oklahoma, Nuttal No.1 is a privately owned earth dam designed by the USDA NRCS and completed in 1962.
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Summary
Standing at a height of 32 feet with a hydraulic height of 28 feet, this dam serves the primary purpose of "Other" and has a storage capacity of 100 acre-feet. The dam, situated along the TR-CANADIAN-R river, is regulated and inspected by the Oklahoma Water Resources Board (OWRB) and meets state permitting and enforcement requirements. Despite its low hazard potential, Nuttal No.1 is classified as having a very high risk assessment rating of 1.
With a controlled spillway and a single valve outlet gate, Nuttal No.1 has not undergone modifications in recent years and is currently considered to be in "Not Rated" condition. Although the dam has a normal storage capacity of 40 acre-feet, it can store up to 100 acre-feet when necessary. The surrounding area is at risk of inundation, prompting the need for risk management measures to be put in place. Despite its relatively low hazard potential, the high risk assessment rating indicates the importance of closely monitoring and maintaining Nuttal No.1 to ensure the safety of the community and the integrity of the dam structure.
Year Completed |
1962 |
Dam Length |
600 |
Dam Height |
32 |
River Or Stream |
TR-CANADIAN-R |
Primary Dam Type |
Earth |
Hydraulic Height |
28 |
Nid Storage |
100 |
Structural Height |
32 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
32 |
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.
Nuttal No.1