ESPA Groundwater Contours Spring 2013 - 50 ft interval

This file cotains contours that illustrate the water-table elevation in the eastern Snake Plain aquifer (ESPA) during March and April of 2013. The contours are are plotted on a 50-ft interval.本文件包含用于展示2013年3月至4月期间斯内克河平原东部含水层（Eastern Snake Plain Aquifer, ESPA）地下水位高程的等值线。该等值线以50英尺为间隔绘制。