Knowles Reservoir Dam is an earth dam located in Zavala County, Texas, built in 1971. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall. 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 Knowles Reservoir Dam
The primary purpose of Knowles Reservoir Dam 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 F Bonnet;shirlene Bonnet (private). It impounds the Nueces River.
The dam stands 15 feet tall, and has a maximum storage capacity of 300 acre-feet. Completed in 1971, 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 01/24/1972. That was over 54 years ago.
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Location
| State | Texas |
| County | Zavala |
| River/Stream | Nueces River |
| Coordinates | 28.93667, -99.79833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 300 acre-ft |
| Max Storage | 300 acre-ft |
| Normal Storage | 120 acre-ft |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | F Bonnet;shirlene Bonnet |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 01/24/1972 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TX01806 |
| Federal ID | TX01806 |
| More Info | State Dam Safety Program |