Dams in Williamson County, Texas
66Total Dams
34High Hazard
12Significant
Dam Safety in Williamson County, Texas
Williamson County has 66 dams tracked in the National Inventory of Dams. Of these, 34 are classified as high hazard — meaning failure would probably cause loss of human life. Another 12 carry a significant hazard classification. Currently, 2 dams have a condition assessment of poor or unsatisfactory.
The average dam in Williamson County is 60 years old. The most common purpose is flood risk reduction. The tallest dam is North San Gabriel Dam at 162 ft.
Explore more: Oldest dams in Texas · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| North San Gabriel Dam | High | Not Available | 162 | Flood Risk Reduction | 1980 |
| Granger Dam | High | Not Available | 115 | Water Supply | 1979 |
| Upper Brushy Creek Ws Scs Site 4 Dam | High | Satisfactory | 57 | Flood Risk Reduction | 1960 |
| Upper Brushy Creek Ws Scs Site 3 Dam | High | Satisfactory | 55 | Flood Risk Reduction | 1962 |
| Upper Brushy Creek Ws Scs Site 7 Dam | High | Satisfactory | 54 | Flood Risk Reduction | 1965 |
| Upper Brushy Creek Ws Scs Site 21 Dam | High | Satisfactory | 49 | Flood Risk Reduction | 1959 |
| Upper Brushy Creek Ws Scs Site 6 Dam | High | Satisfactory | 49 | Flood Risk Reduction | 1959 |
| Upper Brushy Creek Ws Scs Site 16 Dam | High | Satisfactory | 48 | Flood Risk Reduction | 1963 |
| Lower Brushy Creek Ws Scs Site 18 Dam | High | Fair | 43 | Flood Risk Reduction | 1963 |
| Upper Brushy Creek Ws Scs Site 10a Dam | High | Not Rated | 42 | Flood Risk Reduction | 1965 |
| Upper Brushy Creek Ws Scs Site 8 Dam | High | Satisfactory | 42 | Flood Risk Reduction | 1959 |
| Upper Brushy Creek Ws Scs Site 19 Dam | High | Satisfactory | 41 | Flood Risk Reduction | 1960 |
| Upper Brushy Creek Ws Scs Site 11 Dam | High | Satisfactory | 41 | Flood Risk Reduction | 1967 |
| La Frontera Detention Dam | High | Fair | 39 | Recreation | 1958 |
| Upper Brushy Creek Ws Scs Site 5 Dam | High | Satisfactory | 39 | Flood Risk Reduction | 1960 |
| Upper Brushy Creek Ws Scs Site 2 Dam | High | Satisfactory | 39 | Flood Risk Reduction | 1962 |
| Upper Brushy Creek Ws Scs Site 29 Dam | High | Fair | 37 | Flood Risk Reduction | 1972 |
| Upper Brushy Creek Ws Scs Site 20 Dam | High | Satisfactory | 36 | Flood Risk Reduction | 1960 |
| Upper Brushy Creek Ws Scs Site 9 Dam | High | Not Rated | 36 | Flood Risk Reduction | 1959 |
| Upper Brushy Creek Ws Scs Site 18 Dam | High | Satisfactory | 36 | Flood Risk Reduction | 1960 |
| Upper Brushy Creek Ws Scs Site 25 Dam | High | Fair | 35 | Flood Risk Reduction | 1975 |
| Upper Brushy Creek Ws Scs Site 1 Dam | High | Satisfactory | 35 | Flood Risk Reduction | 1961 |
| Upper Brushy Creek Ws Scs Site 17 Dam | High | Satisfactory | 34 | Flood Risk Reduction | 1966 |
| Db Wood Rd Dam | High | Not Rated | 32 | ||
| Upper Brushy Creek Ws Scs Site 13a Dam | High | Satisfactory | 32 | Flood Risk Reduction | 1960 |
| Upper Brushy Creek Ws Scs Site 12 Dam | High | Satisfactory | 32 | Flood Risk Reduction | 1967 |
| Upper Brushy Creek Ws Scs Site 15 Dam | High | Satisfactory | 30 | Flood Risk Reduction | 1965 |
| Upper Brushy Creek Ws Scs Site 22 Dam | High | Not Rated | 28 | Flood Risk Reduction | 1959 |
| Upper Brushy Creek Ws Scs Site 30 Dam | High | Fair | 27 | Flood Risk Reduction | 1959 |
| Twin Lakes Dam | High | Fair | 26 | Recreation | 1972 |
| Lower Brushy Creek Ws Scs Site 20 Dam | High | Satisfactory | 26 | Flood Risk Reduction | 1966 |
| Gabriels Overlook Dam | High | Not Rated | 25 | 1964 | |
| Upper Brushy Creek Ws Scs Site 14 Dam | High | Satisfactory | 25 | Flood Risk Reduction | 1966 |
| Upper Brushy Creek Ws Scs Site 32 Dam | High | Satisfactory | 23 | Flood Risk Reduction | 1960 |
| Lower Brushy Creek Ws Scs Site 10 Dam | Significant | Fair | 43 | Flood Risk Reduction | 1963 |
| Lower Brushy Creek Ws Scs Site 3 Dam | Significant | Fair | 40 | Flood Risk Reduction | 1960 |
| Lower Brushy Creek Ws Scs Site 9 Dam | Significant | Fair | 40 | Flood Risk Reduction | 1966 |
| Lower Brushy Creek Ws Scs Site 6 Dam | Significant | Fair | 36 | Flood Risk Reduction | 1964 |
| Lower Brushy Creek Ws Scs Site 4a Dam | Significant | Fair | 35 | Flood Risk Reduction | 1961 |
| Lower Brushy Creek Ws Scs Site 7 Dam | Significant | Fair | 34 | Flood Risk Reduction | 1960 |
| Lower Brushy Creek Ws Scs Site 17 Dam | Significant | Fair | 27 | Flood Risk Reduction | 1963 |
| Lower Brushy Creek Ws Scs Site 2 Dam | Significant | Fair | 26 | Flood Risk Reduction | 1960 |
| Wolf Lakes Village Section 1 Phase 1 And Section 2 Pond Dam | Significant | Not Rated | 23 | 2022 | |
| Malish Lake Dam | Significant | Not Rated | 21 | Recreation | 1968 |
| City Lake No 1 Dam | Significant | Unsatisfactory | 20 | Recreation | 1955 |
| Zimmerhanzel Lake Dam | Significant | Not Rated | 19 | Recreation | 1968 |
| Lower Brushy Creek Ws Scs Site 8 Dam | Low | Fair | 50 | Flood Risk Reduction | 1960 |
| Upper Brushy Creek Ws Scs Site 31 Dam | Low | Fair | 44 | Flood Risk Reduction | 1977 |
| Clement Dam No 4 | Low | Not Rated | 34 | Recreation | 1980 |
| Upper Brushy Creek Ws Scs Site 33 Dam | Low | Fair | 31 | Flood Risk Reduction | 1959 |
| Lower Brushy Creek Ws Scs Site 23 Dam | Low | Fair | 30 | Flood Risk Reduction | 1961 |
| Brenni Lake Dam | Low | Not Rated | 29 | Recreation | 1974 |
| Lower Brushy Creek Ws Scs Site 22 Dam | Low | Fair | 26 | Flood Risk Reduction | 1961 |
| Wittliff Bland Gss | Low | Not Rated | 24 | 1967 | |
| Seggern Gss | Low | Not Rated | 23 | 1981 | |
| Winterrowd Lake Dam | Low | Not Rated | 23 | Recreation | 1956 |
| Pearson Lake Dam | Low | Not Rated | 23 | Recreation | 1980 |
| Tx No Name No 48 Dam | Low | Not Rated | 23 | Recreation | 1949 |
| Lower Brushy Creek Ws Scs Site 13 Dam | Low | Fair | 23 | Flood Risk Reduction | 1960 |
| Capitol Aggregates Georgetown Crushing Dam | Low | Not Rated | 22 | Water Supply | 1982 |
| Lower Brushy Creek Ws Scs Site 12 Dam | Low | Poor | 22 | Flood Risk Reduction | 1966 |
| Lower Brushy Creek Ws Scs Site 21 Dam | Low | Fair | 19 | Flood Risk Reduction | 1960 |
| Hejl Lake Dam | Low | Not Rated | 15 | Recreation | 1976 |
| City Lake Dam | Low | Not Rated | 15 | Recreation | 1963 |
| Star Golf Partners Pond 1 | Low | Not Rated | 14 | ||
| Walsh Lake Dam | Low | Not Rated | 11 | Recreation | 1930 |