White Mountain
White Mountain is an earth dam located in Apache County, Arizona, built in 1929. It carries a Low hazard potential classification.
About White Mountain
The primary purpose of White Mountain is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Pioneer Irrigation Company Inc. (private). It impounds the Hall Creek near Greer.
The dam stands 16 feet tall and stretches 1,200 feet across, creates a reservoir covering 480 acres, has a storage capacity of 2,391 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1929, 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. The most recent inspection on record was 09/18/2019.
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Location
| State | Arizona |
| County | Apache |
| Nearest City | Greer |
| River/Stream | Hall Creek |
| Coordinates | 34.00889, -109.51389 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 1,200 ft |
| Year Completed | 1929 (97 years old) |
Storage & Hydraulics
| NID Storage | 2,391 acre-ft |
| Normal Storage | 2,391 acre-ft |
| Surface Area | 480 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 220 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | PIONEER IRRIGATION COMPANY INC. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 09/18/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AZ00099 |
| Federal ID | AZ00099 |
| More Info | State Dam Safety Program |