Dd No 31-3 Reservoir Report
Last Updated: December 13, 2025
Dd No 31-3 is a vital flood risk reduction structure located in Nemaha, Kansas, along the Cedar Creek.
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Summary
Built in 1988, this earth dam stands at a height of 24.5 feet and has a maximum storage capacity of 505.29 acre-feet. With a normal storage capacity of 56.32 acre-feet and a drainage area of 1.17 square miles, this structure plays a crucial role in controlling debris and reducing flood risk in the region.
Managed by the local government and regulated by the Kansas Department of Agriculture, Dd No 31-3 has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. Despite its moderate risk level, this structure has not been assigned a Dam Safety Action Classification (DSAC) date, indicating a need for further risk assessment and management measures. With a spillway width of 70 feet and a maximum discharge of 2051 cubic feet per second, this dam is equipped to handle potential flood events and protect the surrounding community.
While Dd No 31-3 has not been inspected in recent years and lacks an Emergency Action Plan (EAP), its presence serves as a critical line of defense against flooding in the area. With the potential for future modifications and updates to enhance its efficiency and safety, this dam remains an essential component of water resource management and climate resilience efforts in Nemaha, Kansas.
Year Completed |
1988 |
Dam Height |
24.5 |
River Or Stream |
CEDAR CREEK - TR |
Primary Dam Type |
Earth |
Surface Area |
14.12 |
Drainage Area |
1.17 |
Nid Storage |
505.29 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Turkey C Nr Seneca
|
14cfs |
Big Nemaha River At Falls City
|
310cfs |
North Fork Big Nemaha River At Humboldt
|
67cfs |
Missouri River At Rulo
|
26600cfs |
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 31-3