Kennecott Mill Zone IV Retention is an earth dam located in Salt Lake County, Utah. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall, taller than 50% of U.S. dams with a recorded height. 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 Kennecott Mill Zone IV Retention
The primary purpose of Kennecott Mill Zone IV Retention 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 Kennecott Utah Copper , LLC (private). It impounds the So. Fork Barneys Canyon near South Jordan.
The dam stands 25 feet tall, has a storage capacity of 100 acre-feet, and collects water from a drainage area of 0 square miles.
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 10/29/2020.
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Location
| State | Utah |
| County | Salt Lake |
| Nearest City | South Jordan |
| River/Stream | So. Fork Barneys Canyon |
| Coordinates | 40.58694, -112.08737 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
Storage & Hydraulics
| NID Storage | 100 acre-ft |
| Normal Storage | 100 acre-ft |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Kennecott Utah Copper , LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/29/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | UT00719 |
| Federal ID | UT00719 |
| More Info | State Dam Safety Program |