| Álvaro Obregón Dam | |
| Name Official: | Presa Oviáchic |
| Location Map: | Mexico |
| Coordinates: | 27.8225°N -109.8928°W |
| Country: | Mexico |
| Location: | Cajeme, Sonora |
| Status: | In use |
| Construction Began: | 1947 |
| Opening: | 1952 |
| Dam Type: | Embankment |
| Dam Height: | 570NaN0 |
| Dam Length: | 14570NaN0 |
| Dam Crosses: | Yaqui River |
| Res Name: | Lake Oviáchic |
| Res Capacity Total: | 32260000000NaN0 |
| Res Surface: | 2080NaN0 |
| Plant Operator: | Comisión Federal de Electricidad |
| Plant Commission: | 28 August 1957 |
| Plant Turbines: | 2 |
| Plant Capacity: | 19 MW |
The Álvaro Obregón Dam (also known as the Oviáchic Dam) is an embankment dam on the Yaqui River north of Ciudad Obregón, in Sonora, Mexico. The purpose of the dam is water supply for irrigation, flood control and hydroelectric power production. The dam supports a power station with two generators and a 19 MW installed capacity.[1]
Because of drought, the Álvaro Obregón Dam and others on the Sonora and Mayo Rivers were constructed in the 1940s and 1950s. Construction on the Álvaro Obregón Dam began in 1947 and was complete in 1952. The dam's power station was not operational until August 1957.[2] The dam is 570NaN0 above the riverbed and 14570NaN0 long.[3] The dam has an additional saddle dam 20NaN0 to its northwest and along with a system of canals, it helps irrigate 83% of a 2329990NaN0 area.[4] Because of drought in the 1990s and 2000s, 2004 was the first year that water from the dam's reservoir was not authorized for irrigation.[5]