Johnston Coy and Knight Harold is an earth dam located in Hopkins County, Texas, built in 1989. It carries a Low hazard potential classification.
Dam profile
NID height · 22 ft22 ft tall and 1,133 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 Coy and Knight Harold
The primary purpose of Johnston Coy and Knight Harold is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Johnston Coy and Knight Harold (private). It impounds the Tr-reddig Creek.
The dam stands 22 feet tall and stretches 1,133 feet across, creates a reservoir covering 53 acres, has a maximum storage capacity of 545 acre-feet, and collects water from a drainage area of 22 square miles. Completed in 1989, the structure is 37 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 01/26/1990. That was over 36 years ago.
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Location
| State | Texas |
| County | Hopkins |
| River/Stream | Tr-reddig Creek |
| Coordinates | 33.01558, -95.74375 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 1,133 ft |
| Year Completed | 1989 (37 years old) |
Storage & Hydraulics
| NID Storage | 545 acre-ft |
| Max Storage | 545 acre-ft |
| Normal Storage | 318 acre-ft |
| Surface Area | 53 acres |
| Drainage Area | 22 sq mi |
| Max Discharge | 6,364 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Johnston Coy and Knight Harold |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 01/26/1990 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX06354 |
| Federal ID | TX06354 |
| More Info | State Dam Safety Program |