Piedmont_and_Blue_Ridge_crystalline-rock_aquifers

This data set represents the extent of the Piedmont and Blue Ridge crystalline-rock aquifers in the states of Alabama, Delaware, District of Columbia, Georgia,...本数据集呈现了美国阿拉巴马州、特拉华州、哥伦比亚特区、佐治亚州等区域内皮埃蒙特（Piedmont）与蓝岭（Blue Ridge）结晶岩含水层的分布范围。