Dams in Hidalgo County, Texas
23Total Dams
14High Hazard
0Significant
Dam Safety in Hidalgo County, Texas
Hidalgo County has 23 dams tracked in the National Inventory of Dams. Of these, 14 are classified as high hazard — meaning failure would probably cause loss of human life.
The average dam in Hidalgo County is 65 years old. The most common purpose is irrigation. The tallest dam is Retamal Diversion Dam at 36 ft.
Explore more: Oldest dams in Texas · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Mcallen North Reservoir | High | Not Rated | 30 | 2004 | |
| Anzalduas Diversion Dam | High | Fair | 23 | Flood Risk Reduction | 1960 |
| La Joya Lake Dam | High | Not Rated | 19 | Irrigation | 1955 |
| United Off-channel Reservoir Dam | High | Not Rated | 18 | ||
| New Boeye Reservoir Levee | High | Not Rated | 16 | Water Supply | 2011 |
| Boeye Reservoir Levee | High | Not Rated | 16 | Water Supply | 1959 |
| Delta Lake Unit No 2 Levee | High | Not Rated | 16 | Irrigation | 1939 |
| District Lake Dam | High | Not Rated | 12 | 1927 | |
| Walker Lake Dam | High | Not Rated | 12 | 1927 | |
| Delta Lake Unit No 1 Levee | High | Not Rated | 12 | Irrigation | 1939 |
| Hidalgo Id No 1 Reservoir Levee | High | Not Rated | 11 | Irrigation | 1982 |
| Mercedes District Settling Basin Dam | High | Not Rated | 10 | Irrigation | 1907 |
| Retama Reservoir Levee | High | Not Rated | 9 | Irrigation | 1935 |
| Hidalgo County Wid No 3 Reservoir Dam | High | Not Rated | 8 | 2010 | |
| Retamal Diversion Dam | Low | Fair | 36 | Flood Risk Reduction | 1975 |
| Penitas Lake Dam | Low | Not Rated | 12 | Irrigation | 1960 |
| Donna Reservoir No 2 Levee | Low | Not Rated | 12 | Irrigation | 1956 |
| Engelman Gardens Reservoir Levee | Low | Not Rated | 12 | Irrigation | 1975 |
| Engelman Irrigation Dam | Low | Not Rated | 11 | Irrigation | 1996 |
| Donna Reservoir No 1 Levee | Low | Not Rated | 11 | Irrigation | 1962 |
| Carlson Lake Levee | Low | Not Rated | 10 | Recreation | 1961 |
| Hargill Reservoir Levee | Low | Not Rated | 8 | Irrigation | 1950 |
| Valley Acres Reservoir | Low | Not Rated | 7 | Irrigation | 1951 |