L L Graham Lake Dam
L L Graham Lake Dam is an earth dam located in McMullen County, Texas, built in 1968. It carries a Low hazard potential classification.
About L L Graham Lake Dam
The primary purpose of L L Graham Lake Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Ll Graham (private). It impounds the Prairie Creek.
The dam stands 16 feet tall and stretches 1,050 feet across, creates a reservoir covering 11 acres, and has a maximum storage capacity of 150 acre-feet. Completed in 1968, the structure is well into its service life at over 50 years 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.
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Location
| State | Texas |
| County | McMullen |
| River/Stream | Prairie Creek |
| Coordinates | 28.58103, -98.72574 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 1,050 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 150 acre-ft |
| Max Storage | 150 acre-ft |
| Normal Storage | 48 acre-ft |
| Surface Area | 11 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | LL GRAHAM |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX03001 |
| Federal ID | TX03001 |
| More Info | State Dam Safety Program |