Cone Johnson Dam is an earth dam located in Castro County, Texas, built in 1971. It carries a Low hazard potential classification.
Dam profile
NID height · 17 ft17 ft tall and 570 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 Cone Johnson Dam
The primary purpose of Cone Johnson Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Johnson Cone Johnson Edith and Johnson Randy (private). It impounds the North Tule Draw.
The dam stands 17 feet tall and stretches 570 feet across, and has a maximum storage capacity of 372 acre-feet. Completed in 1971, 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. The most recent inspection on record was 07/14/1971. That was over 55 years ago.
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Location
| State | Texas |
| County | Castro |
| River/Stream | North Tule Draw |
| Coordinates | 34.68128, -102.01945 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 570 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 372 acre-ft |
| Max Storage | 372 acre-ft |
| Normal Storage | 173 acre-ft |
| Spillway Type | None |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Johnson Cone Johnson Edith and Johnson Randy |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/14/1971 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX03714 |
| Federal ID | TX03714 |
| More Info | State Dam Safety Program |