Jimmy Williams Dam Reservoir Report

Last Updated: December 5, 2025

Jimmy Williams Dam, located in Brashear, Missouri, was completed in 1999 by the USDA NRCS and serves multiple purposes such as fire protection and creating a stock or small fish pond.


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Summary

This private dam, standing at a height of 23 feet with a hydraulic height of 22 feet, spans a length of 530 feet and has a normal storage capacity of 51 acre-feet. Situated on TR-LOST CREEK, the dam's low hazard potential and moderate risk assessment make it a crucial structure for water resource management in the region.

Managed by a private entity, Jimmy Williams Dam has a spillway width of 10 feet and is primarily made of earth and stone materials. With a drainage area of 198.4 square miles, the dam provides essential water storage for the surrounding area and plays a vital role in maintaining the ecological balance of the region. Despite not being state-regulated, the dam's structural integrity and low risk level make it a reliable asset for fire protection and agricultural purposes.

As a key feature in the St. Louis District, Jimmy Williams Dam is a testament to effective collaboration between private owners and government agencies in ensuring water resource sustainability. With its strategic location and functional design, the dam continues to play a crucial role in water management, stock farming, and environmental conservation efforts in Adair County, Missouri.

Year Completed

1999

Dam Length

530

Dam Height

23

River Or Stream

TR-LOST CREEK

Primary Dam Type

Earth

Surface Area

5

Hydraulic Height

22

Drainage Area

198.4

Nid Storage

80

Structural Height

29

Outlet Gates

None

Hazard Potential

Low

Foundations

Soil

Nid Height

29
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.