Mountain Valley Lake No 3 Dam
Mountain Valley Lake No 3 Dam is an earth dam located in Johnson County, Texas, built in 1960. It carries a High hazard potential classification.
About Mountain Valley Lake No 3 Dam
Mountain Valley Lake No 3 Dam is a dam in Johnson, Texas. The dam is owned by Johnson County Public Works;paramount Place Inc (private). It impounds the Tr-village Creek near Joshua.
The dam stands 14 feet tall and stretches 650 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 35 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1960, 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. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 10/10/2023.
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 | Johnson |
| Nearest City | Joshua |
| River/Stream | Tr-village Creek |
| Coordinates | 32.48159, -97.37235 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 650 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 35 acre-ft |
| Max Storage | 35 acre-ft |
| Normal Storage | 33 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | None |
Ownership & Safety
| Owner | JOHNSON COUNTY PUBLIC WORKS;PARAMOUNT PLACE INC |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Last Inspection | 10/10/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | TX09005 |
| Federal ID | TX09005 |
| More Info | State Dam Safety Program |