Tres Irmaos
| Dam Name | Tres Irmaos |
| River | Tiete |
| Main Basin | De la Plata |
| Near City | Pereira Barreto |
| Administration City | Rio Grande do Sul |
| Country | Brazil |
| Year | 1999 |
| Dam Height | 57 |
| Dam Length | 3700 |
| Area(Sqkm) | 591.8 |
| Area(Polygonal) | 591.8 |
| Capital Expenditure | 13450 |
| Depth(M) | 22.7 |
| Avg Displacement Of Water | 880557 |
| Catchment Area In Sqkm | 71173 |
| Main Usage | Navigation |
| Status | 3: Fair |
| Longitude | -51.299583 |
| Latitude | -20.667083 |
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