Patterson
Patterson is an earth dam located in Apache County, Arizona, built in 1944. It carries a Low hazard potential classification.
About Patterson
The primary purpose of Patterson is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Arizona State Land Department;jmp Ranches Inc. (private). It impounds the Mail Station Draw near Woodruff.
The dam stands 17 feet tall and stretches 2,170 feet across, creates a reservoir covering 97 acres, and has a storage capacity of 533 acre-feet. Completed in 1944, 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 11/06/2009. That was over 16 years ago.
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Location
| State | Arizona |
| County | Apache |
| Nearest City | Woodruff |
| River/Stream | Mail Station Draw |
| Coordinates | 34.23083, -109.71556 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 2,170 ft |
| Year Completed | 1944 (82 years old) |
Storage & Hydraulics
| NID Storage | 533 acre-ft |
| Normal Storage | 533 acre-ft |
| Surface Area | 97 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | ARIZONA STATE LAND DEPARTMENT;JMP RANCHES INC. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 11/06/2009 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AZ00262 |
| Federal ID | AZ00262 |
| More Info | State Dam Safety Program |