13) Common extent for estimating groundwater-level and groundwater storage-volume change, Smith Valley and Mason Valley, Nevada

This polygon represents the areal extent used to estimate groundwater-level and groundwater storage-volume change in Smith Valley and Mason Valley, Nevada. Each...本多边形代表了用于估算美国内华达州（Nevada）史密斯谷（Smith Valley）与梅森谷（Mason Valley）地下水位（groundwater-level）及地下水储存量变化（groundwater storage-volume change）的面状研究范围。Each...