Slack is a rockfill dam located in Gila County, Arizona, built in 1995. It carries a Low hazard potential classification.
Dam profile
NID height · 60 ft60 ft tall and 587 ft long, taller than 95% 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 rockfill embankment section and the water level is illustrative.
About Slack
The primary purpose of Slack 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 Capstone Pinto Valley Mining Corp. (private). It impounds the Pinto Creek - Tr near Roosevelt Lake Estates.
The dam stands 60 feet tall and stretches 587 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 59 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1995, the structure is 31 years 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 03/25/2014. That was over 12 years ago.
At 60 feet, this dam is taller than 95% of all dams in the United States.
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Location
| State | Arizona |
| County | Gila |
| Nearest City | Roosevelt Lake Estates |
| River/Stream | Pinto Creek - Tr |
| Coordinates | 33.42330, -110.99750 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 60 ft |
| Dam Height | 50 ft |
| Dam Length | 587 ft |
| Year Completed | 1995 (31 years old) |
Storage & Hydraulics
| NID Storage | 59 acre-ft |
| Max Storage | 59 acre-ft |
| Normal Storage | 42 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Capstone Pinto Valley Mining Corp. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 03/25/2014 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AZ00225 |
| Federal ID | AZ00225 |
| More Info | State Dam Safety Program |