Gs Dd No 17-20a Reservoir Report
Nearby: Dd No 17-16 Gs Dd No C 22-8
Last Updated: December 13, 2025
Gs Dd No 17-20a is a flood risk reduction structure located in Brown, Kansas, along the GREGGS CREEK-TR river stream.
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Summary
Built in 1994, this earth dam stands at a height of 30.2 feet and has a length of 450 feet, providing a maximum storage capacity of 144.4 acre-feet. The primary purpose of this dam is to mitigate flood risks and control debris in the area, with a spillway width of 60 feet to manage a maximum discharge of 600 cubic feet per second.
Managed by the Kansas Department of Agriculture, Gs Dd No 17-20a is regulated and inspected by state authorities to ensure its structural integrity and operational effectiveness. With a low hazard potential and a moderate risk assessment rating, this dam plays a crucial role in protecting the surrounding community from potential flooding events. Despite not having outlet gates, this structure meets the necessary guidelines for emergency preparedness and risk management, enhancing its resilience to climate-related challenges in the region.
Designed by WILBUR NAYLOR P.E., Gs Dd No 17-20a showcases the importance of local government initiatives in water resource management and climate adaptation. As part of the Kansas City District, this dam serves as a vital infrastructure asset in safeguarding the area against flooding and enhancing overall water security. With a focus on public safety and environmental sustainability, this structure exemplifies the collaborative efforts between state agencies and engineers to address the evolving challenges of water resources and climate change.
Year Completed |
1994 |
Dam Length |
450 |
Dam Height |
30.2 |
River Or Stream |
GREGGS CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
6.9 |
Drainage Area |
0.43 |
Nid Storage |
144.4 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Delaware R Nr Muscotah
|
34cfs |
Turkey C Nr Seneca
|
14cfs |
Big Nemaha River At Falls City
|
310cfs |
Missouri River At Rulo
|
26600cfs |
Vermillion C Nr Wamego
|
8cfs |
Soldier C Nr Delia
|
2cfs |
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.
Gs Dd No 17-20a