Maryland Water-Use Data, 1998
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MDWU98 is a point coverage that represents the locations of wells for the State of Maryland that are permitted to withdraw 10,000 gallons or more per day by the...
MDWU98是一款点覆盖数据集(point coverage),用于表征美国马里兰州境内获批每日抽取10000加仑及以上水量的井的点位分布,此类井的许可由……



