Gs No B-24 (Gc 6) Reservoir Report

Last Updated: December 9, 2025

Gs No B-24 (Gc 6) is a local government-owned dam located in Atchison, Kansas, along the Grasshopper Creek.


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Summary

This earth dam, designed by USDA NRCS, serves the primary purpose of flood risk reduction, with a storage capacity of 390 acre-feet. The dam stands at a height of 31 feet and spans a length of 800 feet, with a spillway width of 40 feet.

Despite being categorized as having a low hazard potential, the dam is regulated by the Kansas Department of Agriculture and undergoes regular state inspections, permitting, and enforcement. The risk assessment for Gs No B-24 (Gc 6) indicates a moderate risk level, highlighting the importance of ongoing monitoring and management measures to ensure the safety and integrity of the structure.

With its vital role in flood risk reduction and its location within a highly populated area, Gs No B-24 (Gc 6) serves as a crucial piece of infrastructure in safeguarding the local community from potential water-related disasters. Its design, construction, and regulatory oversight are essential components in water resource and climate management efforts in the region.

Dam Length

800

Dam Height

31

River Or Stream

GRASSHOPPER CREEK

Primary Dam Type

Earth

Surface Area

13

Drainage Area

0.85

Nid Storage

390

Outlet Gates

None

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

31
       
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.