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广西壮族自治区

2010年水资源公报

广西壮族自治区水利厅

目 录

综述

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一、水资源量

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（一）降水量 ········································································································3 （二）地表水资源量 ·····························································································6 （三）出入境、入海水量 ······················································································9 （四）浅层地下水资源量 ······················································································10 （五）水资源总量 ································································································10

二、蓄水动态

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三、供用耗排水量

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（一）供水量 ······································································································14 （二）用水量········································································································14 （三）耗水量········································································································16 （四）废污水排放量·····························································································16

四、用水指标

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五、江河水库水质

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（一）主要水系水质状况 ··················································································18 （二）水库水质状况·····························································································21 （三）国际(界)、省际(界)和地级市交接断面水质状况·····································21 （四）主要城市饮用水水源地水质状况·······························································22 （五）重点水功能区水资源质量状况···································································25 （六）设区市河流交界断面的水资源质量达标考核状况·····································25 （七）主要水污染事件························································································ 28

六、重要水事

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综 述

2010年，广西平均降水量1580.3mm，降水总量3740.0亿m3，比多年均值偏多2.82%；水资源总量1823.6亿m3，比多年均值偏少3.62%，为平水年份。大中型水库年末蓄水量为244.4亿m3，比年初增加49.4亿m3。

2010年广西极端灾害性天气事件多发突发重发，出现了历史罕见的秋冬春持续特大干旱灾害和频繁的洪涝灾害。1～4月出现持续高温少雨天气，各地降雨严重偏少，部分江河来水量减少，水库蓄水量不足。2010年广西共发生了10次洪涝灾害。由于降雨集中、来势猛、强度大，一些地方发生严重内涝，并引发了山洪和滑坡、泥石流等地质灾害。蒙江、洛清江支流石榴河、盘阳河、贝江等中小河流发生超过10年一遇以上的较大洪水。

2010年广西总供水量301.58亿m3，比上年减少1.76亿m3，其中地表水供水量289.32亿m3；地下水供水量11.15亿m3；其他水源供水量1.11亿m3。2010年广西总用水量为301.58亿m3，其中生产用水量267.02亿m3，生活用水量29.24亿m3，生态环境用水量5.32亿m3。2010年广西总耗水量为133.36亿m3，比2009年减少2.04亿m3，综合耗水率44.22%。2010年广西废污水排放总量为40.97亿 m3，比2009年增加0.47亿m3，

2010年广西人均综合用水量为655m3，万元GDP用水量为319m3。水田灌溉亩均毛用水量为934m3，万元工业增加值（当年价）用水量为146m3，城镇人均居民生活用水量为223 L/d，农村人均居民生活用水量为143L/d。

2010年广西主要河流水质与上年度相比基本持平，长江流域片的湘江、资水，珠江流域片的清水河、大环江、驮娘江、平而河、水口河、归春河、明江水质较好，而南流江、钦江、马江、九洲江、右江、郁江、武思江、洛清江、罗江等河流局部河段水质较差。全区主要城市饮用水水源地水质状况良好。

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一、水资源量

（一）降水量

2010年广西平均降水量1580.3mm，折合降水总量为3740.0亿m3，比上年值增加22.2%，比多年平均值增加2.82%。

各地降水分布不均，各雨量站降水量在808mm～3527mm之间，年最大降水量是年最小降水量的4.36倍。暴雨中心与历年基本一致，主要在桂南沿海十万大山、桂北元宝山、天平山和猫儿山一带，其中十万大山的年降水量在2000～3500mm之间，为全区最高；降雨低值区主要分布在桂西南的西林、乐业、田林、田东、平果、隆安一带，桂东南的岑溪、容县和玉林一带以及桂中来宾、武宣一带，年降水量在800～1600mm之间。其它地区年降水量均在1600～2400mm。

从行政分区来看，与2009年相比，全区除北海市、钦州市偏少以外，其他各市降水量均偏多，偏多在7.89%～41.0%之间。与多年平均相比，偏多最大的是贺州市，为19.25%，偏少最大的是北海市，为23.07%。

(%)20.0010.000.00-10.00 -20.00-30.00全广西贺州市梧州市贵港市河池市南宁市来宾市玉林市桂林市百色市崇左市柳州市防城港市钦州市北海市2010年广西行政分区降水量与多年均值比较 3

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