Shoko rokuti gukuravhu (soil erosion) rinoreva kutakurwa kwevhu kubva panzvimbo pari richikukurwa nemvura yekunaya kana nemhepo. Gukuravhu rinokonzera kuti nzizi nehova dzizare nevhu dzichigumisidza dzapwa sezvakaita rwizi Save mune dzimwe nzvimbo.