Sister Grove Creek Ws Scs Site 5 Dam is an earth dam located in Collin County, Texas, built in 1952. It carries a Significant hazard potential classification.
Dam profile
NID height · 49 ft49 ft tall and 1,220 ft long, taller than 92% 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 Sister Grove Creek Ws Scs Site 5 Dam
The primary purpose of Sister Grove Creek Ws Scs Site 5 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 Collin County;collin County Swcd (local government). It impounds the Sweetwater Creek.
The dam stands 49 feet tall and stretches 1,220 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 900 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1952, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. An emergency action plan is in place for this dam. The most recent inspection on record was 08/02/2017.
At 49 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Texas |
| County | Collin |
| River/Stream | Sweetwater Creek |
| Coordinates | 33.38552, -96.51837 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 49 ft |
| Dam Height | 49 ft |
| Dam Length | 1,220 ft |
| Year Completed | 1952 (74 years old) |
Storage & Hydraulics
| NID Storage | 900 acre-ft |
| Max Storage | 900 acre-ft |
| Normal Storage | 111 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 5,097 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Collin County;collin County Swcd |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 08/02/2017 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX04255 |
| Federal ID | TX04255 |
| More Info | State Dam Safety Program |