Monticello City No. 1 Reservoir Report

Reservoir Report

Utah

Nearby: Loyd`S Lake(Monticello) Monticello Millsite Pond #4

Last Updated: December 5, 2025

Monticello City No.

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Summary

1 is a local government-owned dam located in San Juan, Utah, with a primary purpose of irrigation. Completed in 1975, this earth dam stands at a structural height of 30 feet and has a hydraulic height of 26 feet. The dam has a storage capacity of 135 acre-feet, with a normal storage level of 125 acre-feet, serving as a vital resource for water management in the region. Despite being labeled as low hazard potential, the dam is subject to state regulation, inspection, and enforcement by the Utah Division of Water Rights, ensuring its continued safety and functionality.

Situated near North Creek, Monticello City No. 1 plays a crucial role in the irrigation infrastructure of the area, supporting agricultural activities and water supply reliability. The dam spans 1600 feet in length and is designed to withstand the demands of water management in the region. While the dam's condition assessment is currently labeled as 'Not Rated,' regular inspections every five years help to monitor its performance and identify any necessary maintenance or improvements. With the dam's last inspection conducted in May 2016, efforts are ongoing to ensure its compliance with regulatory standards and emergency preparedness measures.

Managed by the Albuquerque District of the US Army Corps of Engineers, Monticello City No. 1 serves as a key component of the water resource infrastructure in Utah. With a dedicated purpose of irrigation, the dam contributes to the overall water management strategy in the region. Its strategic location and storage capacity make it an essential asset for maintaining water supply stability and supporting agricultural activities in the surrounding area. As climate change continues to impact water resources, the proper regulation and maintenance of dams like Monticello City No. 1 are critical to ensuring sustainable water management practices for future generations.

Year Completed	1975
Dam Length	1600
River Or Stream	NORTH CREEK--OFFSTREAM
Primary Dam Type	Earth
Hydraulic Height	26
Nid Storage	135
Structural Height	30
Hazard Potential	Low
Nid Height	30

Explore Interactive Map

MONTICELLO CITY NO. 1

Reservoir Report • Water Levels • Weather Forecast

December 5, 2025

Year_Completed	1975
Dam_Length	1600
River_Or_Stream	NORTH CREEK--OFFSTREAM
Primary_Dam_Type	Earth
Hydraulic_Height	26
Nid_Storage	135
Structural_Height	30
Hazard_Potential	Low
Nid_Height	30

Seasonal Comparison

Weather Forecast

Nearby Streamflow Levels

South Creek Above Reservoir Near Monticello 0.09cfs	0cfs
Recapture Creek Near Blanding 0.0cfs	0cfs
Dolores River Near Slick Rock 20.0cfs	20cfs
Dolores River At Bedrock 22.8cfs	23cfs
Mill Creek At Sheley Tunnel 4.55cfs	5cfs
Mill Creek Below Sheley Tunnel 2.9cfs	3cfs

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.