US Estimated Private Domestic Wells Map Service

Private domestic well use estimates for US Census block groups were calculated using a combination of population and housing unit data from the 1990, 2000 and 2010...美国人口普查街区组（US Census block groups）的私人家庭水井使用量估算值，通过结合1990年、2000年与2010年的人口及住房单元数据计算得到...