The dam of São Pedro, built on the shore of São Pedro, has a reservoir with a storage volume of 10,800,000 m³ and is integrated into the Global System of Alqueva irrigation.
Dam zoned embankment with waterproofing curtain.
Landfill volume: 400,000 m³.
Maximum dam height: 24.1 m.
Development and width of the crown: 733 m and 7 m.
Flood Spillway: duckbill discharger with 30 m of useful development, restitution channel with 140 m and dissipation basin type III USBR (Flow scaling = 55 m³ / s).
Water intake: Tower with 22 m high, 50 m walkway; for feeding the reservoir and irrigating circuit were installed two conduits of 2500 mm and for bottom discharge a conduit of 1200 mm, being the three installed in parallel involved in a concrete mass in the dam body.
Accessibility: access path to the crown, with bituminous coating