John Graves Dam No 4
John Graves Dam No 4 is an earth dam located in Mills County, Texas, built in 1974. It carries a Low hazard potential classification.
About John Graves Dam No 4
The primary purpose of John Graves Dam No 4 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by John R Graves Estate (private). It impounds the Tr-hog Branch.
The dam stands 20 feet tall and stretches 130 feet across, and has a maximum storage capacity of 75 acre-feet. Completed in 1974, 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 04/01/1974. That was over 52 years ago.
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Location
| State | Texas |
| County | Mills |
| River/Stream | Tr-hog Branch |
| Coordinates | 31.54075, -98.75082 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 130 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 75 acre-ft |
| Max Storage | 75 acre-ft |
| Normal Storage | 37 acre-ft |
| Spillway Type | None |
Ownership & Safety
| Purpose | Irrigation |
| Owner | JOHN R GRAVES ESTATE |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 04/01/1974 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX04275 |
| Federal ID | TX04275 |
| More Info | State Dam Safety Program |