Clark Southwest Dam is a dam located in Collin County, Texas. It carries a High hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 21 ft21 ft tall and 1,050 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Clark Southwest Dam
Clark Southwest Dam is a dam in Collin, Texas. The dam is owned by Rl Trust (private). It impounds the Trib. of Little Elm Creek.
The dam stands 21 feet tall and stretches 1,050 feet across, and has a maximum storage capacity of 378 acre-feet.
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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 12/05/2019.
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 | Collin |
| River/Stream | Trib. of Little Elm Creek |
| Coordinates | 33.39515, -96.82698 |
Physical Characteristics
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 1,050 ft |
Storage & Hydraulics
| NID Storage | 378 acre-ft |
| Max Storage | 378 acre-ft |
| Normal Storage | 141 acre-ft |
| Max Discharge | 2 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Rl Trust |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 12/05/2019 |
| Emergency Action Plan | No |
Identifiers
| NID ID | TX07455 |
| Federal ID | TX07455 |
| More Info | State Dam Safety Program |