Most of the water used for hydropower generation is returned to the river though some evaporates and there are important impacts on timing and quality of streamflows.

H?u h?t n??c s? d?ng cho s?n xu?t thu? ?i?n ???c tr? l?i cho dòng sông,  m?t ph?n b?c h?i và có nh?ng tác ??ng quan tr?ng v? th?i gian và ch?t l??ng c?a sông

Hydroelectricity is the largest renewable source for power generation and its share in total electricity generation is expected to remain around 16% through 2035.

Th?y ?i?n là ngu?n n?ng l??ng tái t?o l?n nh?t ?? phát ?i?n và chia s? c?a nó trong t?ng s?n l??ng ?i?n d? ki?n ??s? chi?m  kho?ng 16% t?ng s?n l??ng ?i?n cho ??n n?m 2035.

For developing countries alone $103 billion per year are required to finance water, sanitation and wastewater treatment through 2015.

??i v?i các n??c phát tri?n , m?i m?t n??c ph?i chi ??n 130 t? $ m?i n?m cho nhu c?u n??c, v? sinh môi tr??ng và x? lý n??c th?i ??n n?m 2015.

Roughly 75% of all industrial water withdrawals are used for energy production.

Kho?ng 75% l??ng n??c khai thác  ???c s? d?ng ?? s?n xu?t n?ng l??ng.