Grand Lake Dam is an earth dam located in Stephens County, Texas, built in 1921. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 850 ft long, taller than 68% of U.S. dams with a recorded height. 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 Grand Lake Dam
Grand Lake Dam is a dam in Stephens, Texas. The dam is owned by Swanson Muleshoe Ranch Ltd (private). It impounds the Big Branch.
The dam stands 30 feet tall and stretches 850 feet across, creates a reservoir covering 65 acres, and has a maximum storage capacity of 1,157 acre-feet. Completed in 1921, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 06/07/1983. That was over 43 years ago.
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Location
| State | Texas |
| County | Stephens |
| River/Stream | Big Branch |
| Coordinates | 32.76876, -98.87107 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 850 ft |
| Year Completed | 1921 (105 years old) |
Storage & Hydraulics
| NID Storage | 1,157 acre-ft |
| Max Storage | 1,157 acre-ft |
| Normal Storage | 375 acre-ft |
| Surface Area | 65 acres |
| Max Discharge | 15,050 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Swanson Muleshoe Ranch Ltd |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/07/1983 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX03638 |
| Federal ID | TX03638 |
| More Info | State Dam Safety Program |