Mccowan Reservoir Report

Last Updated: December 5, 2025

Mccowan, Milo 99-81-22 is a privately owned dam located in Kane County, Utah, with a primary purpose of recreation.


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Summary

The dam is regulated by the Utah Division of Water Rights and is subject to state permitting, inspection, and enforcement. With a hydraulic height of 12 feet and a structural height of 15 feet, this earth dam stands at 100 feet in length and has a storage capacity of 6 acre-feet.

Despite not having a specific completion year or condition assessment rating, Mccowan, Milo 99-81-22 is classified as having a significant hazard potential. The dam's spillway width is 15 feet, and it is inspected every two years. While there are no associated structures or emergency action plan prepared for this dam, it meets state jurisdiction requirements and is in compliance with state regulatory agencies.

Located in the Los Angeles District, Mccowan, Milo 99-81-22 provides valuable recreation opportunities in the area. Enthusiasts interested in water resource management and climate change can appreciate the diverse regulations and operational details surrounding this dam, making it a fascinating site to study and monitor for environmental impacts and sustainability efforts in the region.

Dam Length

100

Primary Dam Type

Earth

Hydraulic Height

12

Nid Storage

6

Structural Height

15

Hazard Potential

Significant

Nid Height

15
       
Seasonal Comparison

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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.