Summary
Completed in 2015, this earth dam boasts a height of 25.2 feet and a length of 550 feet, with a storage capacity of 303 acre-feet. Despite its high hazard potential, the dam's condition is assessed as satisfactory, with regular inspections ensuring its safety and functionality.
Managed by the Kansas Department of Agriculture, the 21st Street Dam plays a pivotal role in protecting the surrounding area from potential flooding events. Its uncontrolled spillway, with a width of 180 feet, helps regulate water flow during periods of high discharge. While the dam has no outlet gates, it effectively serves its primary purpose of flood risk reduction, safeguarding the community and infrastructure downstream.
With a moderate risk assessment and a positive risk management outlook, the 21st Street Dam is a vital asset in the region's water resource and climate resilience efforts. As climate change continues to pose challenges, maintaining and monitoring structures like this dam will be crucial in ensuring the safety and sustainability of water resources for years to come.
Year Completed |
2015 |
Dam Length |
550 |
Dam Height |
25.2 |
River Or Stream |
REPUBLICAN RIVER-TR |
Primary Dam Type |
Earth |
Surface Area |
7.67 |
Drainage Area |
1.02 |
Nid Storage |
303 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Republican R At Concordia
|
130cfs |
Republican R At Scandia
|
119cfs |
Solomon R At Beloit
|
17cfs |
Solomon R Nr Minneapolis
|
32cfs |
Salt C Nr Ada
|
47cfs |
Republican R At Clay Center
|
138cfs |
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.
21st Street Dam