Cadet No. 1 Dam Reservoir Report

Last Updated: December 5, 2025

Cadet No.


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Summary

1 Dam, located in Washington, Missouri, is a privately owned structure primarily constructed for tailings purposes. Built in 1968, this rockfill dam stands at a height of 53 feet and spans a length of 1100 feet. It has a storage capacity of 264 acre-feet and covers a surface area of 13.1 acres. The dam is situated on the MILLCREEK TRIB OFFSTREAM and is regulated by the DAM AND RESERVOIR SAFETY PROG in Missouri.

The dam's hazard potential is categorized as high, with a satisfactory condition assessment as of December 2007. Although the risk assessment indicates a moderate level of risk, the dam has not been assigned a Dam Safety Action Classification (DSAC) to date. It is subject to regular inspections, with the last one conducted in October 2017. While the dam does not have outlet gates, an uncontrolled spillway with a width of 15 feet is in place for managing excess water flow.

Cadet No. 1 Dam plays a crucial role in water resource management in the region, offering flood protection and regulating water flow. With its strategic location and design features, this dam serves as a vital infrastructure asset for the community of BLACKWELL and surrounding areas. As water resource and climate enthusiasts, understanding the technical specifications and regulatory oversight of Cadet No. 1 Dam provides valuable insights into the complexities of dam infrastructure and its importance in sustainable water management practices.

Year Completed

1968

Dam Length

1100

Dam Height

53

River Or Stream

MILLCREEK TRIB OFFSTREAM

Primary Dam Type

Rockfill

Surface Area

13.1

Drainage Area

66

Nid Storage

264

Structural Height

53

Outlet Gates

None

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

53
       
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.