Mann Lake Dam is an earth dam located in Zavala County, Texas, built in 1939. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 3,500 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 Mann Lake Dam
The primary purpose of Mann Lake Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Cf Mann (private). It impounds the Tr-palo Blanco Creek.
The dam stands 12 feet tall and stretches 3,500 feet across, creates a reservoir covering 14 acres, and has a maximum storage capacity of 86 acre-feet. Completed in 1939, the structure is well-established, with more than 75 years of service.
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 | Zavala |
| River/Stream | Tr-palo Blanco Creek |
| Coordinates | 28.85500, -100.08333 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 10 ft |
| Dam Length | 3,500 ft |
| Year Completed | 1939 (87 years old) |
Storage & Hydraulics
| NID Storage | 86 acre-ft |
| Max Storage | 86 acre-ft |
| Normal Storage | 52 acre-ft |
| Surface Area | 14 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Cf Mann |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX01813 |
| Federal ID | TX01813 |
| More Info | State Dam Safety Program |