East Fork Big Creek Dam Z- 13 Reservoir Report
Last Updated: December 11, 2025
East Fork Big Creek Dam Z-13 in BETHANY MO., Missouri, is a privately owned earth dam designed by the USDA NRCS for flood risk reduction on ZADIE CREEK.
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Summary
Completed in 1998, this dam has a structural height of 34 feet and a hydraulic height of 21 feet, with a maximum storage capacity of 187 acre-feet and a normal storage of 48 acre-feet. The dam's spillway type is uncontrolled, with a width of 40 feet, and it has a low hazard potential and a moderate risk assessment rating.
Located in Harrison County, Missouri, this dam plays a crucial role in managing water resources and mitigating flood risks in the region. Despite being privately owned, the dam has not been regulated or inspected by the state, and its condition assessment is currently not rated. With a history of moderate risk assessment and a lack of emergency action plan preparedness, there are potential challenges in terms of risk management and emergency response in case of dam failure. Overall, East Fork Big Creek Dam Z-13 serves as a key infrastructure for flood control in the area, highlighting the importance of proper maintenance and monitoring for water resource and climate enthusiasts.
Year Completed |
1998 |
Dam Length |
720 |
Dam Height |
24 |
River Or Stream |
ZADIE CREEK |
Primary Dam Type |
Earth |
Surface Area |
2 |
Hydraulic Height |
21 |
Drainage Area |
6.4 |
Nid Storage |
187 |
Structural Height |
34 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
34 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
East Fork Big Creek Dam Z- 13