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 assessed | 30 | 2004 | |
| Anzalduas Diversion Dam | High | Fair | 23 | Flood Risk Reduction | 1960 |
| La Joya Lake Dam | High | Not assessed | 19 | Irrigation | 1955 |
| United Off-channel Reservoir Dam | High | Not assessed | 18 | ||
| New Boeye Reservoir Levee | High | Not assessed | 16 | Water Supply | 2011 |
| Boeye Reservoir Levee | High | Not assessed | 16 | Water Supply | 1959 |
| Delta Lake Unit No 2 Levee | High | Not assessed | 16 | Irrigation | 1939 |
| District Lake Dam | High | Not assessed | 12 | 1927 | |
| Walker Lake Dam | High | Not assessed | 12 | 1927 | |
| Delta Lake Unit No 1 Levee | High | Not assessed | 12 | Irrigation | 1939 |
| Hidalgo Id No 1 Reservoir Levee | High | Not assessed | 11 | Irrigation | 1982 |
| Mercedes District Settling Basin Dam | High | Not assessed | 10 | Irrigation | 1907 |
| Retama Reservoir Levee | High | Not assessed | 9 | Irrigation | 1935 |
| Hidalgo County Wid No 3 Reservoir Dam | High | Not assessed | 8 | 2010 | |
| Retamal Diversion Dam | Low | Fair | 36 | Flood Risk Reduction | 1975 |
| Penitas Lake Dam | Low | Not assessed | 12 | Irrigation | 1960 |
| Donna Reservoir No 2 Levee | Low | Not assessed | 12 | Irrigation | 1956 |
| Engelman Gardens Reservoir Levee | Low | Not assessed | 12 | Irrigation | 1975 |
| Engelman Irrigation Dam | Low | Not assessed | 11 | Irrigation | 1996 |
| Donna Reservoir No 1 Levee | Low | Not assessed | 11 | Irrigation | 1962 |
| Carlson Lake Levee | Low | Not assessed | 10 | Recreation | 1961 |
| Hargill Reservoir Levee | Low | Not assessed | 8 | Irrigation | 1950 |
| Valley Acres Reservoir | Low | Not assessed | 7 | Irrigation | 1951 |