Upper Locust Creek L-139 Reservoir Report
Last Updated: December 12, 2025
Upper Locust Creek L-139 is a flood risk reduction dam located in Putnam, Missouri, designed by USDA NRCS and completed in 1994.
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Summary
The dam stands at 28.8 feet high with a structural height of 31 feet, serving the primary purpose of flood risk reduction along the TR-East Fork Locust Creek. With a storage capacity of 90 acre-feet and a drainage area of 1490 acres, the dam plays a crucial role in managing water flow and mitigating potential flooding in the area.
Despite being classified as having a low hazard potential, Upper Locust Creek L-139 is deemed to have a moderate risk level. The dam features an uncontrolled spillway with a width of 30 feet and no outlet gates. While not currently rated for its condition assessment, the dam has not undergone recent inspections or maintenance. With its earth dam type and stone core, the structure presents an intriguing case study for water resource and climate enthusiasts interested in the intersection of infrastructure, water management, and environmental risk assessment.
Year Completed |
1994 |
Dam Length |
440 |
Dam Height |
28.8 |
River Or Stream |
TR-EAST FORK LOCUST CREEK |
Primary Dam Type |
Earth |
Surface Area |
25 |
Hydraulic Height |
28 |
Drainage Area |
1490 |
Nid Storage |
90 |
Structural Height |
31 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
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.
Upper Locust Creek L-139