Choctaw Creek Ws Scs Site 11 Dam is an earth dam located in Grayson County, Texas, built in 1988. It carries a High hazard potential classification.
Dam profile
NID height · 47 ft47 ft tall and 3,362 ft long, taller than 91% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Choctaw Creek Ws Scs Site 11 Dam
The primary purpose of Choctaw Creek Ws Scs Site 11 Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Choctaw Watershed Wid;city of Sherman;grayson County Commissioners Court;upper Elm Red Swcd (local government). It impounds the Post Oak Creek near Sherman.
The dam stands 47 feet tall and stretches 3,362 feet across, creates a reservoir covering 45 acres, has a maximum storage capacity of 2,844 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1988, the structure is 38 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 06/25/2018. That was 8 years ago, which is on the longer end for a high-hazard structure.
At 47 feet, this dam is taller than 91% of dams nationwide.
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 | Grayson |
| Nearest City | Sherman |
| River/Stream | Post Oak Creek |
| Coordinates | 33.66369, -96.64450 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 47 ft |
| Dam Height | 44 ft |
| Dam Length | 3,362 ft |
| Year Completed | 1988 (38 years old) |
Storage & Hydraulics
| NID Storage | 2,844 acre-ft |
| Max Storage | 2,844 acre-ft |
| Normal Storage | 368 acre-ft |
| Surface Area | 45 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 2 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Choctaw Watershed Wid;city of Sherman;grayson County Commissioners Court;upper Elm Red Swcd |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Not assessed |
| Last Inspection | 06/25/2018 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX06488 |
| Federal ID | TX06488 |
| More Info | State Dam Safety Program |