Table 3. Reservoir Construction on Upper Yangtze and Its Tributaries In Different Time Periods Upstream of Yichang

Time periods 1950s 1960s 1970s 1980s Total
Number of reservoirs completed 1603 1689 7199 1440 11931
Total storage volume(108m3) 30.4 33.26 74.58 66.80 205.04