Dd No 4-3 (Mapes) Reservoir Report
Nearby: Gs Dd No 4-4a (Beam) Dd No 4-2
Last Updated: December 12, 2025
Dd No 4-3 (Mapes) is a local government-owned dam located in Muscotah, Kansas, along the Muddy Creek-TR.
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Summary
Built in 1987 by Speaker & King, this earth dam stands at a height of 27 feet with a length of 610 feet, providing flood risk reduction and debris control for the surrounding area. With a storage capacity of 110 acre-feet and a drainage area of 0.18 square miles, the dam plays a crucial role in managing water flow and protecting the community from potential flooding events.
Despite being classified as having a low hazard potential, Dd No 4-3 (Mapes) is deemed to have a moderate risk level, indicating the importance of regular monitoring and maintenance. The dam features an uncontrolled spillway with a width of 48 feet and is not currently equipped with outlet gates. While its condition assessment is not rated, the dam has not undergone any recent modifications or inspections. It is essential for water resource and climate enthusiasts to stay informed about the risk management measures in place for Dd No 4-3 (Mapes) to ensure the safety and resilience of the community against potential hazards.
As part of the Kansas City District, Dd No 4-3 (Mapes) serves as a vital infrastructure for flood control in the region, with a primary purpose of reducing flood risks and protecting the surrounding area from potential inundation. The dam's location in Jackson County, Kansas, highlights its importance in managing water resources and maintaining the ecological balance of the local ecosystem. With a normal storage capacity of 29.6 acre-feet and a surface area of 4.86 acres, this dam plays a significant role in water conservation and flood mitigation efforts in the area, making it a key asset for water resource and climate enthusiasts to monitor and support.
Year Completed |
1987 |
Dam Length |
610 |
Dam Height |
27 |
River Or Stream |
MUDDY CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
4.86 |
Drainage Area |
0.18 |
Nid Storage |
110 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Delaware R Nr Muscotah
|
37cfs |
Big Nemaha River At Falls City
|
310cfs |
Turkey C Nr Seneca
|
15cfs |
Soldier C Nr Delia
|
2cfs |
Missouri River At Rulo
|
28600cfs |
Stranger C Nr Potter
|
199cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Geremy's Point
|
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God's Country
|
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Main Camp Site
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Dd No 4-3 (Mapes)