Dresser Ind. Old #1 Reservoir Report

Last Updated: December 5, 2025

Located in Mineral Point, Missouri, Dresser Ind.


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Summary

Old #1 is a privately owned dam with a primary purpose of tailings storage. Built in 1968, this structure stands at a height of 45 feet and spans a length of 5373 feet, providing a storage capacity of 1300 acre-feet. The dam is regulated by the DAM AND RESERVOIR SAFETY PROG in Missouri and is subject to regular inspections to ensure its structural integrity.

With a high hazard potential, Dresser Ind. Old #1 is designated as having a moderate risk level. Despite this, the condition assessment conducted in September 2014 deemed the dam to be in a satisfactory state. Emergency action plans are in place, although their last revision was in December 2017. The dam has no outlet gates and features an uncontrolled spillway, with a maximum discharge capacity of 5 cubic feet per second.

Water resource and climate enthusiasts interested in the engineering and management of dams will find Dresser Ind. Old #1 to be an intriguing case study. Its unique design, purpose, and regulatory oversight offer valuable insights into the challenges and considerations involved in maintaining critical water infrastructure in the face of changing environmental conditions.

Year Completed

1968

Dam Length

5373

Dam Height

45

River Or Stream

RUBENEAU BRANCH-OFFSTREAM

Surface Area

39

Drainage Area

39

Nid Storage

1300

Structural Height

45

Outlet Gates

None

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

45
       
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.