Açude Acarape do Meio, also known as Barragem Eugênio Gudin, is a reservoir located in the municipality of Redenção, in the Maciço de Baturité region of Ceará, approximately 65–75 km from Fortaleza. The reservoir sits at a cota (elevation) of around 133 meters and impounds the rio Pacoti along with waters from several smaller tributaries including the riachos Carrapicho, Gameleira, Jatobá, Baixa Grande, Mosquito, Cana Brava, Limão, Genipapo, Paú dos Ferros, Brenha, Piancó, and Calção.

The reservoir has a water surface area of approximately 220 hectares and a storage capacity of roughly 31.5 to 34.1 million cubic meters. The dam itself is a gravity-type masonry structure with a maximum height of approximately 32–33 meters and a crest length of around 267–350 meters. The spillway is 53–60 meters wide with a sill elevation of approximately 130 meters.

In terms of hydrology, the reservoir's inflow season typically begins by mid-February, with the high-water period lasting approximately 200 days. The spillway activates most frequently between the second half of March and the first half of April, and overflow can persist anywhere from 30 to 110 days depending on rainfall. The reservoir overtops nearly every year, which has implications for water levels and current conditions during the rainy season.

The reservoir is managed by the Companhia de Gestão dos Recursos Hídricos (COGERH) and serves as a strategic water supply source for several municipalities including Redenção, Acarape, Pacatuba, Guaiuba, Maranguape, and Barreira, as well as the Distrito Industrial de Maracanaú. Its primary function is water supply, and paddlers should be aware that this operational purpose may affect access and any applicable use restrictions. The surrounding watershed encompasses roughly 210 km² and includes the municipalities of Baturité, Guaiúba, Guaramiranga, Redenção, Pacoti, Mulungu, and Palmácia.