St. Marys is an earth dam located in Apache County, Arizona, built in 1925. It carries a Low hazard potential classification.
Dam profile
NID height · 7 ft7 ft tall and 363 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About St. Marys
The primary purpose of St. Marys is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Arizona Game & Fish Department (state). It impounds the Rudd Creek near Springerville.
The dam stands 7 feet tall and stretches 363 feet across, creates a reservoir covering 25 acres, has a storage capacity of 124 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1925, the structure is over a century old.
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 06/10/2013. That was over 13 years ago.
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Location
| State | Arizona |
| County | Apache |
| Nearest City | Springerville |
| River/Stream | Rudd Creek |
| Coordinates | 33.99472, -109.31806 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 7 ft |
| Dam Height | 7 ft |
| Dam Length | 363 ft |
| Year Completed | 1925 (101 years old) |
Storage & Hydraulics
| NID Storage | 124 acre-ft |
| Normal Storage | 124 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 4 sq mi |
| Spillway Type | None |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | Arizona Game & Fish Department |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/10/2013 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AZ10117 |
| Federal ID | AZ10117 |
| More Info | State Dam Safety Program |