Piedmont and Blue Ridge carbonate-rock aquifers

This data set represents the extent of the Piedmont and Blue Ridge carbonate-rock aquifers in the states of New Jersey, Pennsylvania, and Maryland.本数据集呈现了新泽西州、宾夕法尼亚州及马里兰州境内皮埃蒙特（Piedmont）与蓝岭（Blue Ridge）碳酸盐岩含水层（carbonate-rock aquifers）的分布范围。