Johnston Lake Dam is an earth dam located in Young County, Texas, built in 1962. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 700 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 Johnston Lake Dam
The primary purpose of Johnston 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 Preston Johnston (private). It impounds the Tr-salt Creek.
The dam stands 12 feet tall and stretches 700 feet across, creates a reservoir covering 12 acres, and has a maximum storage capacity of 145 acre-feet. Completed in 1962, 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 | Young |
| River/Stream | Tr-salt Creek |
| Coordinates | 33.16901, -98.68698 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 700 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 145 acre-ft |
| Max Storage | 145 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 12 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Preston Johnston |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX03944 |
| Federal ID | TX03944 |
| More Info | State Dam Safety Program |