Joseph Elayer Reservoir Report
Last Updated: December 5, 2025
Joseph Elayer is a privately owned earth dam located in Patterson, Missouri, within the St.
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Summary
Louis District. Constructed by the USDA NRCS in 1998, this dam serves the primary purpose of flood risk reduction and grade stabilization along the TR-CLUBB CREEK. Standing at a height of 31 feet and stretching 700 feet in length, Joseph Elayer has a storage capacity of 67 acre-feet and covers a surface area of 3 acres, with a drainage area of 125 square miles.
Despite its low hazard potential and moderate risk assessment score of 3, Joseph Elayer has not been rated for its condition assessment. The dam features an uncontrolled spillway with a width of 55 feet and no outlet gates. The last inspection of the dam took place in November 1999, and it has not been regularly inspected since. While the dam's emergency action plan status and compliance with guidelines remain unclear, its presence plays a crucial role in managing flood risks in the region, highlighting the importance of regular maintenance and monitoring of such critical infrastructure for water resource and climate enthusiasts.
Year Completed |
1998 |
Dam Length |
700 |
Dam Height |
23 |
River Or Stream |
TR-CLUBB CREEK |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
22 |
Drainage Area |
125 |
Nid Storage |
67 |
Structural Height |
31 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
St. Francis River Near Patterson
|
235cfs |
St. Francis River Near Saco
|
187cfs |
Black River At Leeper
|
508cfs |
Black River Near Annapolis
|
269cfs |
St. Francis River Near Mill Creek
|
83cfs |
East Fork Black River At Lesterville
|
44cfs |
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.
Joseph Elayer