Frd No 3-6 Reservoir Report
Nearby: Frd No 3-7 Frd No 4-3
Last Updated: December 5, 2025
Frd No 3-6, also known as Upper Verdigris WS Dam 3 6, is a local government-owned structure located in Lyon County, Kansas.
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Summary
Built in 1962 by the USDA NRCS, this earth dam stands at a height of 31 feet and spans a length of 1080 feet. Its primary purpose is flood risk reduction along the North Branch Verdigris River.
With a normal storage capacity of 51 acre-feet and a maximum discharge of 899 cubic feet per second, Frd No 3-6 plays a crucial role in managing water flow in the area. Despite its low hazard potential and moderate risk assessment, the dam's condition has not been rated. The dam features an uncontrolled spillway with a width of 40 feet and is under state regulation by the Kansas Department of Agriculture.
Water resource and climate enthusiasts will appreciate Frd No 3-6 for its significant contribution to flood risk reduction in the region. Its location in the heart of Kansas, along with its design and construction by the USDA NRCS, highlights the importance of effective water management infrastructure in safeguarding communities from potential disasters. As a state-regulated structure with a long history of service, Frd No 3-6 stands as a testament to the ongoing efforts to protect the environment and promote sustainable water resource management practices.
Year Completed |
1962 |
Dam Length |
1080 |
Dam Height |
31 |
River Or Stream |
N BRANCH VERDIGRIS RIVER-TR |
Primary Dam Type |
Earth |
Surface Area |
10.17 |
Hydraulic Height |
28 |
Drainage Area |
1.1 |
Nid Storage |
304 |
Structural Height |
31 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Cottonwood R Nr Plymouth
|
898cfs |
Neosho R Nr Americus
|
75cfs |
Verdigris R Nr Virgil
|
183cfs |
Neosho R At Burlington
|
2740cfs |
Cedar C Nr Cedar Point
|
61cfs |
Marais Des Cygnes R Nr Reading
|
10cfs |
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.
Frd No 3-6