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水资源是人类的宝贵财富。人们的生活、生产和维护人类赖以生存的生态环境都离不开水。水资源以地表水和地下水为主要的存在形式。它具有三个特点:(一)水是可以再生的资源,河道的水年复一年地流淌着,但它不是取之不尽,用之不竭的。根据多年的观测,在一条河流或一个地区内,一年的径流量和地下水补给量是有一个限度的。象我区的地表水和浅层地下水资源总量为509亿立米,黄河流过我区的径流量为315亿立米。(二)水资源来自大气降水。水资源的分布在地区间和时间上很不均匀。有的地区水多,容易发生洪涝,有的地区水少,
Water is a precious treasure of humanity. People’s lives, production and maintenance of human ecological environment are inseparable from the water. Water resources mainly include surface water and groundwater. It has three characteristics: (1) water is a renewable resource, and the water of the river flows year after year, but it is not inexhaustible and inexhaustible. Based on years of observation, there is a limit to annual runoff and groundwater recharge within a river or a region. The total surface water and shallow groundwater resources in our area are 50.9 billion cubic meters and the runoff of the Yellow River flowing through the district reaches 31.5 billion cubic meters. (B) water resources from the precipitation. The distribution of water resources is uneven across regions and time. Some areas are juicy, prone to floods, water in some areas,