Wellhead Protection Areas - 6 Month Time of Travel

For more information about this layer please see the GIS Data Catalog. Polygons depict time of travel estimates for active public drinking water supplies. Source location data were obtained from the Washington State Department of Health, Office of Drinking Water.如需了解该地理信息系统图层的更多信息，请参阅地理信息系统（Geographic Information System）数据目录。本数据集的多边形要素用于呈现在用公共饮用水供水系统的水流运移时间估算结果。供水源位置数据源自华盛顿州卫生部饮用水办公室。