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 d�ng s�ng,  m?t ph?n b?c h?i v� c� nh?ng t�c ??ng quan tr?ng v? th?i gian v� ch?t l??ng c?a s�ng

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 l� ngu?n n?ng l??ng t�i t?o l?n nh?t ?? ph�t ?i?n v� chia s? c?a n� 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 c�c n??c ph�t 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 m�i tr??ng v� x? l� 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 th�c  ???c s? d?ng ?? s?n xu?t n?ng l??ng.