Lake Winona Dam is an earth dam located in Grimes County, Texas, built in 1959. It carries a Low hazard potential classification.
Dam profile
NID height · 19 ft19 ft tall and 500 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 Lake Winona Dam
The primary purpose of Lake Winona Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Winona Association (private). It impounds the Tr-walnut Creek.
The dam stands 19 feet tall and stretches 500 feet across, creates a reservoir covering 17 acres, and has a maximum storage capacity of 297 acre-feet. Completed in 1959, 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 03/10/1981. That was over 45 years ago.
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Location
| State | Texas |
| County | Grimes |
| River/Stream | Tr-walnut Creek |
| Coordinates | 30.25153, -95.91933 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 500 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 297 acre-ft |
| Max Storage | 297 acre-ft |
| Normal Storage | 85 acre-ft |
| Surface Area | 17 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Recreation |
| Owner | Lake Winona Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 03/10/1981 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX03055 |
| Federal ID | TX03055 |
| More Info | State Dam Safety Program |