Conroe Dam
Conroe Dam is an earth dam located in Montgomery County, Texas, built in 1973. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Conroe Dam
The primary purpose of Conroe Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by San Jacinto River Authority (local government). It impounds the West Fork San Jacinto River near Conroe.
The dam stands 82 feet tall and stretches 11,800 feet across, creates a reservoir covering 20,118 acres, has a maximum storage capacity of 706,970 acre-feet, and collects water from a drainage area of 444 square miles. Completed in 1973, 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 10/01/2020.
At 82 feet, this dam is taller than 97% 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 |
| Nearest City | Conroe |
| River/Stream | West Fork San Jacinto River |
| Coordinates | 30.35692, -95.56467 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 82 ft |
| Dam Height | 82 ft |
| Dam Length | 11,800 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 706,970 acre-ft |
| Max Storage | 706,970 acre-ft |
| Normal Storage | 416,228 acre-ft |
| Surface Area | 20,118 acres |
| Drainage Area | 444 sq mi |
| Max Discharge | 247,247 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | SAN JACINTO RIVER AUTHORITY |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/01/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX00097 |
| Federal ID | TX00097 |
| More Info | State Dam Safety Program |