Millsap Lake Dam
Millsap Lake Dam is an earth dam located in Parker County, Texas, built in 1953. It carries a High hazard potential classification.
About Millsap Lake Dam
The primary purpose of Millsap Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Bill Tinsley (private). It impounds the Wilson Creek.
The dam stands 22 feet tall and stretches 1,065 feet across, creates a reservoir covering 47 acres, has a maximum storage capacity of 561 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1953, 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. An emergency action plan is in place for this dam. The most recent inspection on record was 12/13/2022.
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 | Parker |
| River/Stream | Wilson Creek |
| Coordinates | 32.76736, -98.00876 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 1,065 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 561 acre-ft |
| Max Storage | 561 acre-ft |
| Normal Storage | 385 acre-ft |
| Surface Area | 47 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 3,153 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | BILL TINSLEY |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Last Inspection | 12/13/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX01224 |
| Federal ID | TX01224 |
| More Info | State Dam Safety Program |