Sedona Effluent Reservoirs Reservoir Report

Last Updated: December 5, 2025

Sedona Effluent Reservoirs, located in Cornville, Arizona, are a crucial water resource managed by the local government.


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Summary

Built in 1995, these earth dams stand at 8 feet high and have a storage capacity of 440.3 acre-feet, serving as a reservoir for treated wastewater. The reservoirs have a low hazard potential and are regulated by the Arizona Department of Water Resources, ensuring they meet state inspection, enforcement, and permitting requirements.

The primary purpose of Sedona Effluent Reservoirs is "Other," indicating their role in water management beyond traditional uses. The reservoirs are situated on Spring Creek and have a surface area of 25 acres, with a drainage area of 0.1 square miles. The spillway is uncontrolled, with a width of 5 feet, and the risk assessment deems them to have a moderate risk level. While the condition assessment is not rated, the reservoirs are inspected every five years to ensure their safety and functionality.

With their strategic location and capacity to store treated wastewater, Sedona Effluent Reservoirs play a vital role in water resource management in Yavapai County, Arizona. As climate change impacts water availability, these reservoirs serve as a sustainable solution for recycling water and supporting the region's water needs. Managed with oversight from the state regulatory agency and meeting state requirements, these reservoirs exemplify responsible water management practices in the face of evolving climate challenges.

Year Completed

1995

Dam Length

4890

Dam Height

8

River Or Stream

SPRING CREEK - OS

Primary Dam Type

Earth

Surface Area

25

Hydraulic Height

8

Drainage Area

0.1

Nid Storage

440.3

Hazard Potential

Low

Foundations

Soil

Nid Height

8
       
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.