Sané kasangsayangang sadurung empelan ageng punika kawangun inggih punika kawentenan erosi saking embahan toya sané nénten madaging sedimen, punika ngawinang tatakan tukad ring tebén empelan prasida nedunang.
A concern before the construction of the High Dam had been the potential drop in river-bed level downstream of the Dam as the result of erosion caused by the flow of sediment-free water.