Gsdd No B-12 (Gc Gs 4) Reservoir Report
Nearby: Gsd No B-11 (Gc 3) Gs No B-24 (Gc 6)
Last Updated: December 13, 2025
Gsdd No B-12 (Gc Gs 4) is a local government-owned debris control dam located in Atchison, Kansas along the Grasshopper Creek-TR.
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Summary
Built in 2002 by USDA NRCS, this earth-type dam stands at a height of 25.4 feet and has a length of 750 feet, providing a storage capacity of 381.1 acre-feet. With a low hazard potential and a moderate risk assessment rating, this structure plays a crucial role in managing debris and protecting the surrounding areas from potential flooding events.
Managed by the Kansas Department of Agriculture, this dam is regulated, permitted, inspected, and enforced by state authorities to ensure its safe operation. The primary purpose of Gsdd No B-12 is debris control, with an uncontrolled spillway type and a maximum discharge capacity of 1327 cubic feet per second. Despite its low hazard potential, the dam has not been rated for its condition assessment, indicating the need for further evaluation and maintenance to uphold its functionality and safety standards.
Situated in the Rock Island District, Gsdd No B-12 serves as a vital infrastructure for water resource management in the region. With its strategic location and design features, this dam contributes to the overall resilience of the local watershed, highlighting the importance of effective debris control structures in mitigating the impacts of climate change and enhancing water security for communities in Atchison, Kansas.
Year Completed |
2002 |
Dam Length |
750 |
Dam Height |
25.4 |
River Or Stream |
GRASSHOPPER CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
12.4 |
Drainage Area |
1 |
Nid Storage |
381.1 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Delaware R Nr Muscotah
|
37cfs |
Stranger C Nr Potter
|
199cfs |
Missouri River At St. Joseph
|
27300cfs |
Missouri River At Rulo
|
28600cfs |
Big Nemaha River At Falls City
|
310cfs |
Delaware R Bl Perry Dam
|
131cfs |
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.
Gsdd No B-12 (Gc Gs 4)