Twin Lakes (salt Lake)
Twin Lakes (salt Lake) is a gravity dam located in Salt Lake County, Utah, built in 1914. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Twin Lakes (salt Lake)
The primary purpose of Twin Lakes (salt Lake) is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Salt Lake City Corporation (local government). It impounds the Trib. To Big Cottonwood Creek near Brighton.
The dam stands 62 feet tall and stretches 680 feet across, has a maximum storage capacity of 575 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1914, the structure is over a century old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 08/03/2023.
At 62 feet, this dam is taller than 95% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Utah dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Utah |
| County | Salt Lake |
| Nearest City | Brighton |
| River/Stream | Trib. To Big Cottonwood Creek |
| Coordinates | 40.60019, -111.59742 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 62 ft |
| Dam Length | 680 ft |
| Year Completed | 1914 (112 years old) |
Storage & Hydraulics
| NID Storage | 575 acre-ft |
| Max Storage | 575 acre-ft |
| Normal Storage | 486 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 255 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | SALT LAKE CITY CORPORATION |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/03/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | UT00304 |
| Federal ID | UT00304 |
| More Info | State Dam Safety Program |