Lone Pine is an earth dam located in Navajo County, Arizona, built in 1936. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 98 ft98 ft tall and 900 ft long, taller than 98% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Lone Pine
The primary purpose of Lone Pine is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Navajo County (local government). It impounds the Show Low Creek near Schoens Dam.
The dam stands 98 feet tall and stretches 900 feet across, creates a reservoir covering 357 acres, has a maximum storage capacity of 14,700 acre-feet, and collects water from a drainage area of 183 square miles. Completed in 1936, the structure is well-established, with more than 75 years of service.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 08/19/2020.
At 98 feet, this dam is taller than 98% of all dams in the United States.
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Location
| State | Arizona |
| County | Navajo |
| Nearest City | Schoens Dam |
| River/Stream | Show Low Creek |
| Coordinates | 34.35111, -110.08667 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 98 ft |
| Dam Height | 98 ft |
| Dam Length | 900 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 14,700 acre-ft |
| Max Storage | 14,700 acre-ft |
| Surface Area | 357 acres |
| Drainage Area | 183 sq mi |
| Max Discharge | 15,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Navajo County |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/19/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AZ00012 |
| Federal ID | AZ00012 |
| More Info | State Dam Safety Program |