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Fig. 8 | Geoenvironmental Disasters

Fig. 8

From: Land subsidence and aquifer compaction in Montgomery County, Texas, U.S.: 2000–2020

Fig. 8

Evangeline (blue) and Jasper (red) groundwater-level contours as of the beginning of 2020 in Montgomery County. Groundwater-level altitudes are referenced to the mean sea level (zero meters) defined by the North American Vertical Datum of 1988 (NAVD88). The base contour lines (− 15 m) represent the pre-consolidation heads in the Evangeline aquifer (blue) and the Jasper aquifer (red). The white dashed line represents the 5 mm/year subsidence-contour-line illustrated in Fig. 1

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