Evidence for military activity of any kind during the reign of Senusret II is non-existent. Senusret instead appears to have focused on domestic issues, particularly the irrigation of the Faiyum. This multi-generational project aimed to convert the Faiyum oasis into a productive swath of farmland.[31] Senusret eventually placed his pyramid at the site of el-Lahun, near the junction of the Nile and the Fayuum's major irrigation canal, the Bahr Yussef.[32] He reigned only fifteen years,[33] which explains the incomplete nature of many of his constructions.[31] His son Senusret III succeeded him.