Monticello Millsite Pond #4 Reservoir Report

Last Updated: December 5, 2025

Monticello Millsite Pond #4, located in San Juan County, Utah, is a federal-owned structure regulated by the Utah Division of Water Rights.


°F

°F

mph

Wind

%

Humidity

Summary

This tailings pond, primarily used for storing tailings, has a hydraulic height of 12 feet and a structural height of 14 feet. With a storage capacity of 55.1 acre-feet, it plays a significant role in managing water resources in the area.

Although the condition assessment of Monticello Millsite Pond #4 is currently marked as "Not Rated," its hazard potential is listed as "Undetermined." This earth dam, with a length of 1650 feet, serves as a crucial structure for water management in the region. Despite not having a designated inspection frequency or updated emergency action plan, the pond remains an essential resource for the community.

With its precise location coordinates of 37.8456474 latitude and -109.3368249 longitude, Monticello Millsite Pond #4 stands as a testament to the intersection of water resource management and climate considerations. As water resource and climate enthusiasts delve into the intricacies of this structure, they gain insight into the complex network of regulations, agencies, and purposes that shape water management in Utah.

Dam Length

1650

Primary Dam Type

Earth

Hydraulic Height

12

Nid Storage

55.1

Structural Height

14

Hazard Potential

Undetermined

Nid Height

14
       
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.