Greenwood Dam Reservoir Report
Nearby: Phillip Pagliai Dam Wilkerson Dam
Last Updated: December 13, 2025
Greenwood Dam, located in Macon, Missouri along the Middle Fork Salt River, was completed in 1998 with a primary purpose of grade stabilization.
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Summary
This private earth dam stands at a height of 24.4 feet and has a hydraulic height of 20 feet, with a total length of 475 feet. The dam has a maximum storage capacity of 67 acre-feet and serves a drainage area of 150 acres, with a low hazard potential and a moderate risk assessment rating.
Despite its low hazard potential, Greenwood Dam plays a crucial role in managing water resources and controlling the flow of the Middle Fork Salt River. With a spillway width of 10 feet and no outlet gates, the dam is designed to withstand potential risks and ensure the safety of the surrounding area. While the dam is not regulated by the state and has not been rated for its condition, its presence serves as a vital infrastructure for the community of Woodville and contributes to the overall resilience of the region in the face of changing climate conditions.
Greenwood Dam serves as a key structure for grade stabilization and water management in Macon County, Missouri. With its strategic location and design features, this earth dam provides essential support to the local ecosystem and helps mitigate risks associated with potential flooding events. As climate change continues to impact water resources, Greenwood Dam remains a fundamental component of the region's infrastructure, highlighting the importance of sustainable water management practices for the future.
Year Completed |
1998 |
Dam Length |
475 |
Dam Height |
24.4 |
River Or Stream |
MIDDLE FORK SALT RIVER |
Primary Dam Type |
Earth |
Surface Area |
5 |
Hydraulic Height |
20 |
Drainage Area |
150 |
Nid Storage |
67 |
Structural Height |
21 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
24 |
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.
Greenwood Dam
Longbranch Reservoir Near Macon