from　the　acquisition　of　riverbasin　perception　data　to　the　processing　of　riverbasin　full-dimensional　data,　from　the　three-dimensional　scene　model　of　riverbasin　to　the　riverbasin　digital　twin　model,　the　next　development　direction　is　digital　riverbasin　engineering.　Starting　from　the　construction　of　digital　riverbasin,　this　paper　systematically　studies　the　professional　model　of　digital　riverbasin,　the　twin　model　of　digital　twin　riverbasin　and　the　overall　modeling　of　riverbasin,　and　puts　forward　the　basic　concept　and　platform　architecture　of　digital　riverbasin　engineering.　The　research　results　can　provide　theoretical,　methodological　guidance　and　technical　support　for　the　construction　of　digital　twin　riverbasin　and　future　digital　riverbasin　engineering.　©　2022　IEEE.