Frd No 11 Reservoir Report
Last Updated: December 10, 2025
Located in Vliets, Kansas, Frd No 11, also known as Upper Black Vermillion WS Dam 11, is a local government-owned earth dam designed by the USDA NRCS to primarily reduce flood risks along the North Fork Black Vermillion River.
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Summary
Completed in 1971, this dam stands at a height of 29 feet and has a storage capacity of 235 acre-feet. With a fair condition assessment and a high hazard potential, it is regulated and inspected by the Kansas Department of Agriculture.
The dam features an uncontrolled spillway with a width of 100 feet, serving a drainage area of 0.38 square miles. Despite its moderate risk assessment score of 3, Frd No 11 has no associated locks or outlet gates. The last inspection was conducted in April 2020, with a scheduled frequency of every 3 years. While it currently meets regulatory guidelines, there is no available information on the existence of an Emergency Action Plan or Inundation Maps for the dam.
For water resource and climate enthusiasts, Frd No 11 offers a fascinating case study in flood risk reduction infrastructure in the heart of Kansas. With its strategic location and design specifications, this dam plays a crucial role in mitigating potential hazards and safeguarding the surrounding area from the impacts of extreme weather events. As efforts continue to monitor and maintain the dam's integrity, it serves as a reminder of the vital role that sustainable water management practices play in enhancing community resilience in the face of a changing climate.
Year Completed |
1971 |
Dam Length |
965 |
Dam Height |
29 |
River Or Stream |
N FORK BLACK VERMILLION RIV-TR |
Primary Dam Type |
Earth |
Surface Area |
6.4 |
Hydraulic Height |
29 |
Drainage Area |
0.38 |
Nid Storage |
235 |
Structural Height |
33 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
33 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Black Vermillion R Nr Frankfort
|
46cfs |
Big Blue R At Marysville
|
176cfs |
Turkey C Nr Seneca
|
15cfs |
Vermillion C Nr Wamego
|
9cfs |
Big Blue R At Barneston Nebr
|
131cfs |
L Blue R Nr Barnes
|
111cfs |
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 11