Rashin ruwa na Roseires

Dam din Roseires ( Arabic ) madatsar ruwa ce a kan Blue Nile a Ad Damazin, kusa da garin Er Roseires, a Sudan . Ta ƙunshi madatsar ruwa ta siminti 1 faɗin kilomita tare da matsakaicin tsayin kilomita 68 m, da kuma madatsar ruwa a kowane gefe. Madatsar ruwa a gefen gabas tana da tsawon mita 4. tsawon kilomita, kuma wanda ke gefen yamma shine 8.5 km. Tsawon kilomita. Madatsar ruwan tana da faɗin fili na kimanin 290 km 2 . An kammala madatsar ruwan a shekarar 1966, da farko don dalilai na ban ruwa. An kara tashar samar da wutar lantarki, tare da matsakaicin ƙarfin 280 megawatts, a cikin 1971. Bayan kammala aikin Hidase na Ethiopian, madatsar ruwan Roseires ta zama tashar wutar lantarki mai hanawa. Shirin fadadawa Matsakaicin tsawo na madatsar ruwan ya kasance 68 m, wanda ya karu zuwa 78 m a cikin 2013 kuma madatsar ruwa yanzu tana da tsawon kilomita 25. Dam din ya ƙunshi ƙofofi biyar na 3 m × 5 m da aka tsara don wuce ambaliyar ruwa da kuma bargo. Dam din ya ƙunshi hanyar zubar da ruwa mai ƙofar tare da ƙarfin fitarwa na 694 m3/s. Bugu da kari, an tsara madatsar ruwan tare da ƙananan tashoshin biyar tare da ƙarfin fitarwa na 5,208 m3/s don wuce ambaliyar ruwa da sharar gida ta hanyar tafkin. Tsawaitawar ta ba da damar ƙirar tafkin ta ƙara daga 3 km3 zuwa 7.4 km3, don haka ƙara ƙimar kula da ambaliyar ruwa na madatsar ruwan. Manazarta