SNOFLO



COCONINO

RESERVOIR LEVELS
Rock, Soil Dam Ashurst Run
April 21, 2025


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Coconino is a state-regulated dam located in Coconino County, Arizona, specifically in the city of Sunrise. Built in 1954, this dam serves a primary purpose as a fish and wildlife pond, with additional functions for recreation. It is an earth-type dam with a height of 30 feet and a length of 707 feet, holding a maximum storage capacity of 361 acre-feet and a normal storage of 255 acre-feet. The dam is situated on Ashurst Run and has a drainage area of 12.46 square miles, with a spillway width of 120 feet for uncontrolled discharge.

Despite being classified as having a low hazard potential, Coconino poses a moderate risk according to the latest assessment. It has not been rated for its condition, and the last inspection was conducted in August 2018, with a scheduled frequency of once every 5 years. The dam has not had any modifications in recent years, and there are no emergency action plans in place or inundation maps prepared. The regulatory oversight and enforcement of Coconino fall under the Arizona Department of Water Resources, ensuring compliance with state permitting, inspection, and enforcement requirements for the safety of the surrounding community and environment.

Year_Completed 1954
Dam_Height 30
River_Or_Stream ASHURST RUN
Dam_Length 707
Primary_Dam_Type Earth
Surface_Area 30.7
Hydraulic_Height 30
Drainage_Area 12.46
Nid_Storage 361
Structural_Height 38.5
Hazard_Potential Low
Foundations Rock, Soil
Nid_Height 39
       

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