Page 43 - 2010年全国水利发展统计公报

2010年 全国水利发展统计公报
2010 Statistic Bulletin on China Water Activities

Reservoirs and water complexes. The total number of reservoir all over the
country was 87,873, with a storage capacity of 716.2 billion m3, of which 552
were large reservoirs with a total capacity of 559.4 billion m3, accounting 78.1%
of the total; 3,269 medium-sized reservoirs with a total capacity of 93.0 billion m3,
accounting 13.0% of the total. The percentage of large and medium reservoirs up
to the safety standard was 91.6% that 21.6% higher than that of the year before.

Irrigation. The irrigation district with an area equal or above 10,000 mu were
5,795, with a total effective irrigated area of 29.415 million ha. Of which large
irrigation districts equal or above 500,000 mu were 131, with a total effective
irrigation area of 10.918 million ha; large irrigation districts covering an area of
300,000-500,000 mu were 218, with a total effective irrigation area of 4.740 million
ha. By the end of 2010, the total effective irrigated area reached to 60.348 million
ha that accounted to 49.6% of the total cultivated area. Water-saving irrigated area
reached to 27.314 million ha that accounted for 45.3% of the total effective irrigated
area. In the area applied with water-saving irrigation technologies, 11.580 million
ha of land had lined canals, 6.680 million ha were equipped with low-pressure
pipes, 5.141 million ha were equipped with sprinkler or drip or infiltration irrigation,
3.912 million ha were equipped with other water-saving methods. The percentage
of lined canals in the irrigation districts equal or above 10,000 mu accounted 24.1%
of the total, of which the length of lined main and branch canals accounts to 34.8%.

Tube wells and pumping stations. There were 5.337 million tube wells of all
kinds in the country, of which 4.872 million was installed electricity-lifting equipment
for groundwater abstraction. Their installed capacity was 51.45 GW. By the end of
2010, the fixed electro-mechanical pumping stations reached to 469,000, with an
installed capacity of 37.84 GW. The tube wells for irrigation purposes were 5.012
million, with an installed capacity of 43.21 GW. The fixed pumping stations were
435,000 with an installed capacity of 23.31 GW. The installed capacity of movable
equipment of irrigation and drainage or drip amounted to 20.68 GW.

Rural hydropower and electrification. By the end of 2010, the total hydropower

38