Wadley #3 Reservoir Report

Last Updated: December 5, 2025

Wadley #3 is a private irrigation dam located in Adams County, Colorado, along the Big Dry Creek-OS.


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Summary

Built in 1908, this Earth dam stands at a height of 13 feet and spans 1050 feet in length, with a storage capacity of 67 acre-feet. Despite its age, the dam is considered to have a low hazard potential and has not been rated for its current condition.

While the dam has not been inspected since 1985, it is still regulated, permitted, and inspected by the Colorado Division of Water Resources. The primary purpose of Wadley #3 is irrigation, and it serves as a crucial water resource for the surrounding area. With a maximum discharge rate of 168 cubic feet per second, the dam plays a significant role in managing water flow and storage in the region.

Although the dam poses a high risk due to its age and lack of recent assessments, it continues to provide essential irrigation water for the community. As climate change impacts water resources, ensuring the safety and efficiency of dams like Wadley #3 becomes increasingly important for sustainable water management in the face of evolving environmental challenges.

Year Completed

1908

Dam Length

1050

Dam Height

13

River Or Stream

BIG DRY CREEK-OS

Primary Dam Type

Earth

Surface Area

8

Hydraulic Height

13

Nid Storage

67

Structural Height

13

Hazard Potential

Low

Nid Height

13
       
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.