Johnson Dam is an earth dam located in Coleman County, Texas, built in 1962. It carries a Low hazard potential classification.
Dam profile
NID height · 17 ft17 ft tall and 670 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 Johnson Dam
The primary purpose of Johnson 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 Otis Johnson (private). It impounds the Tr-bull Creek.
The dam stands 17 feet tall and stretches 670 feet across, creates a reservoir covering 19 acres, and has a maximum storage capacity of 184 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 | Coleman |
| River/Stream | Tr-bull Creek |
| Coordinates | 31.53619, -99.45612 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 670 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 184 acre-ft |
| Max Storage | 184 acre-ft |
| Normal Storage | 106 acre-ft |
| Surface Area | 19 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Otis Johnson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX02176 |
| Federal ID | TX02176 |
| More Info | State Dam Safety Program |