Hal Koop Reservoir Dam is an earth dam located in Jackson County, Texas, built in 1982. It carries a Low hazard potential classification.
Dam profile
NID height · 10 ft10 ft tall and 7,180 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 Hal Koop Reservoir Dam
The primary purpose of Hal Koop Reservoir Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Mrs Robinson (private). It impounds the Off Ch-lavaca River.
The dam stands 10 feet tall and stretches 7,180 feet across, creates a reservoir covering 80 acres, and has a maximum storage capacity of 640 acre-feet. Completed in 1982, the structure is 44 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 | Jackson |
| River/Stream | Off Ch-lavaca River |
| Coordinates | 29.07333, -96.85833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 7,180 ft |
| Year Completed | 1982 (44 years old) |
Storage & Hydraulics
| NID Storage | 640 acre-ft |
| Max Storage | 640 acre-ft |
| Normal Storage | 480 acre-ft |
| Surface Area | 80 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Mrs Robinson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX05866 |
| Federal ID | TX05866 |
| More Info | State Dam Safety Program |