Sunset Reservoir Report
Nearby: Seaboard Lagoon N 3 Pond D
Last Updated: January 1, 2026
Sunset is a local government-owned dam located in Guymon, Oklahoma, along the TR-North Canadian River.
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Summary
Built in 1960, this earth dam stands at a height of 15 feet and serves primarily for recreational purposes. With a hydraulic height of 37 feet and a storage capacity of 270 acre-feet, Sunset provides a low hazard potential and is regulated by the Oklahoma Water Resources Board.
Despite its low hazard potential, Sunset is subject to regular state inspections, with the last inspection conducted in December 2010. The dam features a controlled spillway with a width of 1 foot and is equipped with a single valve outlet gate. The risk assessment for Sunset categorizes it as having a very high risk, indicating the need for ongoing monitoring and management measures to ensure the safety and stability of the structure.
For water resource and climate enthusiasts, Sunset offers an opportunity to explore the intersection of dam infrastructure, recreational use, and risk management. As a key feature along the TR-North Canadian River, this earth dam provides insights into the complexities of maintaining and regulating water resources in Oklahoma. With its historical significance and ongoing challenges, Sunset serves as a compelling case study for understanding the broader issues of water management and climate resilience in the region.
Year Completed |
1960 |
Dam Length |
600 |
Dam Height |
15 |
River Or Stream |
TR-N. CANADIAN RIV |
Primary Dam Type |
Earth |
Hydraulic Height |
37 |
Nid Storage |
270 |
Structural Height |
15 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
37 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Palo Duro Ck Nr Spearman
|
0cfs |
Beaver River At Beaver
|
0cfs |
Cimarron River Near Forgan
|
21cfs |
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.
Sunset