Dd No 122 Reservoir Report
Nearby: Dd No 21 Frd No T-3
Last Updated: December 13, 2025
Dd No 122, also known as Pony Creek Joint Dist No 78 Site 122, is a vital water resource structure located in Brown County, Kansas.
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Summary
Owned by the local government and regulated by the Kansas Department of Agriculture, this earth dam serves the primary purpose of flood risk reduction along the Pony Creek-TR. With a height of 33 feet and a storage capacity of 91.75 acre-feet, Dd No 122 plays a crucial role in managing water flow and protecting the surrounding areas from potential flooding events.
Designed by the USDA NRCS, Dd No 122 features an uncontrolled spillway with a width of 50 feet and a maximum discharge capacity of 357 cubic feet per second. Despite its low hazard potential and moderate risk assessment rating, the dam's condition is currently not rated, highlighting the need for regular inspections and maintenance to ensure its continued effectiveness in flood risk reduction. With its strategic location and significant contribution to water resource management in the region, Dd No 122 stands as a key infrastructure for climate and water enthusiasts to monitor and support.
Overall, Dd No 122 serves as a critical flood risk reduction structure in Brown County, Kansas, with a focus on safeguarding the Pony Creek-TR and surrounding areas from potential flooding events. Managed by the local government and designed by the USDA NRCS, this earth dam plays a vital role in managing water flow and protecting the community from water-related hazards. As climate and water enthusiasts continue to monitor and support sustainable water resource management practices, Dd No 122 stands out as a key infrastructure contributing to the resilience and safety of the region.
Dam Length |
575 |
Dam Height |
33 |
River Or Stream |
PONY CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
4.07 |
Hydraulic Height |
26 |
Nid Storage |
91.75 |
Structural Height |
33 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
33 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Big Nemaha River At Falls City
|
310cfs |
Missouri River At Rulo
|
26600cfs |
North Fork Big Nemaha River At Humboldt
|
67cfs |
Turkey C Nr Seneca
|
14cfs |
Delaware R Nr Muscotah
|
34cfs |
Little Nemaha River At Auburn
|
82cfs |
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.
Dd No 122