Lake Simonds Dam
Lake Simonds Dam is an earth dam located in Dallas County, Texas, built in 1962. It carries a High hazard potential classification and has a unsatisfactory condition assessment.
About Lake Simonds Dam
The primary purpose of Lake Simonds Dam 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 City Of Dallas (local government). It impounds the Tr-hickory Creek.
The dam stands 23 feet tall and stretches 1,000 feet across, creates a reservoir covering 25 acres, and has a maximum storage capacity of 450 acre-feet. Completed in 1962, the structure is well into its service life at over 50 years 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 unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. An emergency action plan is in place for this dam. The most recent inspection on record was 05/20/2024.
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 Texas 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 | Texas |
| County | Dallas |
| River/Stream | Tr-hickory Creek |
| Coordinates | 32.64669, -96.57713 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Height | 18 ft |
| Dam Length | 1,000 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 450 acre-ft |
| Max Storage | 450 acre-ft |
| Normal Storage | 268 acre-ft |
| Surface Area | 25 acres |
| Max Discharge | 561 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF DALLAS |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Unsatisfactory |
| Last Inspection | 05/20/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX00825 |
| Federal ID | TX00825 |
| More Info | State Dam Safety Program |