Blanco City Dam No 1 is a buttress dam located in Blanco County, Texas, built in 1957. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 300 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Blanco City Dam No 1
The primary purpose of Blanco City Dam No 1 is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City of Blanco (local government). It impounds the Blanco River near Blanco.
The dam stands 12 feet tall and stretches 300 feet across, and has a maximum storage capacity of 69 acre-feet. Completed in 1957, 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 04/04/1979. That was over 47 years ago.
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Location
| State | Texas |
| County | Blanco |
| Nearest City | Blanco |
| River/Stream | Blanco River |
| Coordinates | 30.09279, -98.43100 |
Physical Characteristics
| Dam Type | Buttress |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 300 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 69 acre-ft |
| Max Storage | 69 acre-ft |
| Normal Storage | 69 acre-ft |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Blanco |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 04/04/1979 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX01567 |
| Federal ID | TX01567 |
| More Info | State Dam Safety Program |