Dd No B-7 Reservoir Report

Last Updated: December 14, 2025

Dd No B-7, also known as Upper Pottawatomie Creek WS No B7, is a flood risk reduction structure located in Anderson County, Kansas.


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Summary

Managed by the local government, this dam has a low hazard potential and has not been rated for its condition assessment. Built by the USDA NRCS, Dd No B-7 stands at 36 feet tall with a hydraulic height of 31 feet, serving the primary purpose of mitigating flood risks along the IANTHA CREEK-TR.

With a maximum storage capacity of 543 acre-feet and a normal storage of 156 acre-feet, Dd No B-7 plays a crucial role in protecting the surrounding area from potential flooding events. The dam, constructed in a buttress core type design, features a spillway width of 40 feet and has associated inspections, permitting, and enforcement by the Kansas Department of Agriculture. While the structure has not been modified in recent years, its importance in managing water resources and climate-related risks cannot be understated.

Located in Lane, Kansas, Dd No B-7 is a key component of the local flood risk reduction infrastructure, contributing to the overall resilience of the area. With its state-regulated status and ownership by the local government, this dam exemplifies the collaborative efforts needed to address water resource challenges and climate impacts. As climate enthusiasts and water resource professionals alike continue to monitor and manage such critical infrastructure, Dd No B-7 remains a vital asset in safeguarding the community against potential flood events.

Dam Length

1875

Dam Height

36

River Or Stream

IANTHA CREEK-TR

Hydraulic Height

31

Nid Storage

543

Structural Height

36

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

36
       
Seasonal Comparison

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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.