| 时间 | 降水量 | 地表水资源量 | 水资源总量 | 水资源总量/降水量 | 地表水资源量/水资源总量 | |
| 年 | mm | 亿m3 | 亿m3 | 亿m3 | % | % |
| 1997 | 613 | 58,168.6 | 26,835.39 | 27,854.76 | 47.89 | 96.34 |
| 1998 | 713 | 67,631 | 32,726 | 34,017 | 50.3 | 96.2 |
| 1999 | 629.1 | 59,702.4 | 27,203.8 | 28,195.7 | 47.23 | 96.48 |
| 2000 | 633.2 | 60,092.34 | 26,561.94 | 27,700.81 | 46.1 | 95.89 |
| 2001 | 612 | 58,126 | 25,933 | 26,868 | 46.22 | 96.52 |
| 2002 | 660 | 62,610 | 27,243 | 28,255 | 45.13 | 96.42 |
| 2003 | 638 | 60,416 | 26,251 | 27,460 | 45.45 | 95.6 |
| 2004 | 601 | 56,876 | 23,126 | 24,130 | 42.43 | 95.84 |
| 2005 | 644.3 | 61,009.6 | 26,982.4 | 28,053.1 | 45.98 | 96.18 |
| 2006 | 610.8 | 57,840 | 24,358 | 25,330.1 | 43.79 | 96.16 |
| 2007 | 610 | 57,763 | 24,242.5 | 25,255.2 | 43.72 | 95.99 |
| 2008 | 654.8 | 62,000.3 | 26,377 | 27,434.3 | 44.25 | 96.15 |
| 2009 | 591.1 | 55,965.5 | 23,125.2 | 24,180.2 | 43.21 | 95.64 |
| 2010 | 695.4 | 65,849.6 | 29,797.6 | 30,906.4 | 46.93 | 96.41 |
| 2011 | 582.3 | 55,132.9 | 22,213.6 | 23,256.7 | 42.18 | 95.51 |
| 2012 | 688 | 65,159.1 | 28,373.3 | 29,528.8 | 45.32 | 96.09 |
| 2013 | 661.9 | 62,674.4 | 26,839.5 | 27,957.9 | 44.61 | 96 |
| 1014 | 622.3 | 58,966.9 | 26,263.9 | 27,266.9 | 46.24 | 96.32 |
| 2015 | 660.8 | 62,569.4 | 26,900.8 | 27,962.6 | 44.69 | 96.2 |
| 2016 | 730 | 69,172.1 | 31,273.9 | 32,466.4 | 46.94 | 96.33 |
| 2017 | 664.8 | 62,994 | 27,746.3 | 28,761.2 | 45.66 | 96.47 |
| 平均 | 643.6 | 60,986.2 | 26,684.48 | 27,754.34 | 45.44 | 96.13 |