K-7 Reservoir Report

Last Updated: December 6, 2025

K-7 is a vital structure located in Hiatville, Kansas, serving the primary purpose of debris control on the Bunion Creek-TR.


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Summary

Constructed in 2010 by AG Engineering, this earth dam stands at a height of 20.4 feet, with a hydraulic height of 17.4 feet and a structural height of 22.7 feet. The dam boasts a storage capacity of 338.24 acre-feet, with a normal storage level of 50.96 acre-feet, covering a surface area of 16.21 acres and draining a 1.19 square mile watershed.

Operated by the Kansas Department of Agriculture, K-7 is designed to mitigate flood risk and protect surrounding areas from inundation, featuring an uncontrolled spillway with a width of 80 feet. Despite being rated as having low hazard potential and moderate risk, the dam's condition remains unrated, with its last inspection conducted in September 2010. With state-regulated permitting, inspection, and enforcement in place, K-7 ensures the safety and sustainability of water resources in Bourbon County, Kansas.

As a crucial component of water resource management in the region, K-7 plays a critical role in controlling debris and safeguarding communities from potential flood events. With its earth dam structure and strategic location on Bunion Creek-TR, this dam exemplifies the collaboration between local government agencies and engineering firms in ensuring the resilience of water infrastructure in Kansas. With a focus on risk management and regulatory compliance, K-7 stands as a testament to the ongoing efforts to protect water resources and the environment in a changing climate landscape.

Year Completed

2010

Dam Length

1256

Dam Height

20.4

River Or Stream

BUNION CREEK-TR

Primary Dam Type

Earth

Surface Area

16.21

Hydraulic Height

17.4

Drainage Area

1.19

Nid Storage

338.24

Structural Height

22.7

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

23
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.