Overview

In 2016,the average precipitation in China was 730.0 mm,13.6% higher than normal years and 10.5% higher than that in 2015.

The total quantity of water resources in the country amounted to 3,246.64 billion m3,17.1% more than normal years.Specifically,the quantity of surface water resources occupied 3,127.39 billion m3 and the quantity of groundwater resources made up 885.48 billion m3,with 119.25 billion m3 non-overlapped with surface water resources.

The total water storage of 639 large-sized reservoirs and 3,410 medium-sized ones in the country decreased by 4.07 billion m3.The total quantity of water in 29 lakes with a surface area greater than 100 km2 （incl.） increased by 1.10 billion m3.The year-end storage of shallow groundwater in the groundwater exploitation areas of the northern plains increased by 6.70 billion m3.

Both the national water supply and use in China were 604.02 billion m3 respectively,6.30 billion m3 less than that in 2015.In particular,surface water supply was 491.24 billion m3,groundwater supply was 105.70 billion m3,and other water source supply was 7.08 billion m3.Domestic water use was 82.16 billion m3,industrial water use was 130.80 billion m3,agricultural water use was 376.80 billion m3,and artificial ecological and environmental water supply was 14.26 billion m3.The national water consumption was 319.29 billion m3,and the national waste water discharge was 76.5 billion tons.

In 2016,the percapita water use in the country was 438 m3,and the water use per 10,000 yuan of GDP （at current price） was 81 m3.The irrigation water use per mu （Note:15 mu = 1 hectare） of farmland was 380 m3,the irrigation water efficiency coefficient was 0.542,the water used per 10,000 yuan of added industrial value （at current price） was 52.8 m3,and the per-capita domestic water use in urban areas （including public water use） and rural areas was 220 L/d and 86 L/d,respectively.In terms of comparable prices,the water use per 10,000 yuan of GDP and added industrial value decreased by 7.2% and 7.6% on the 2015 basis,respectively.

Water quality evaluation was made for 235,000 km of river reaches,indicating that 76.9% of the total evaluated river reaches had a water quality of Classes I-Ⅲ.In addition,water quality was assessed for 118 lakes,23.7% of which had a water quality of Classes I-Ⅲ,and 78.6% of which were in a eutrophic state.Water quality was evaluated for 943 reservoirs,87.5% of which had a water quality of Classes I-Ⅲ,and 28.8% of which were in a eutrophic state.Water quality evaluation was conducted for 4,028 national important water function zones of rivers and lakes,with a compliance rate of 73.4%.Water quality was evaluated for 544 trans-province monitoring sections,67.1% of which had a water quality of Classes I-III.

In 2016,the country received ample precipitation and the total quantity of water resources was on the high side.The water storage of large and medium-sized reservoirs and lakes was generally stable.Compared with 2015,the national water use decreased slightly and the water use was more efficient.Improvement was seen in water quality and water use structure.There was also a slight decline in waste water discharge.