Lewis Creek Dam
Lewis Creek Dam is an earth dam located in Montgomery County, Texas, built in 1969. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Lewis Creek Dam
The primary purpose of Lewis Creek 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 Entergy Texas Inc (private). It impounds the Lewis Creek.
The dam stands 62 feet tall and stretches 12,776 feet across, creates a reservoir covering 960 acres, has a maximum storage capacity of 24,475 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1969, 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 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 03/10/2020.
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 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 | Montgomery |
| River/Stream | Lewis Creek |
| Coordinates | 30.43448, -95.54308 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 62 ft |
| Dam Height | 57 ft |
| Dam Length | 12,776 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 24,475 acre-ft |
| Max Storage | 24,475 acre-ft |
| Normal Storage | 17,000 acre-ft |
| Surface Area | 960 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 7,100 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | ENTERGY TEXAS INC |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 03/10/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX00119 |
| Federal ID | TX00119 |
| More Info | State Dam Safety Program |