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Surface Elevation

Surface Elevation Table Installation

NOAA's National Geodetic Survey established a high-accuracy vertical control network at the Chesapeake Bay Environmental Center to support coastal restoration, research, testing of new geodetic technologies, and monitoring of the effects of local relative sea-level rise. The network includes over a dozen geodetic bench marks distributed throughout the 510-acre wetland reserve near Graysonville, Maryland, with four deep-rod Surface Elevation Table (SET) marks located in the rapidly deteriorating marsh. Here, NOS employees install stainless steel rods into the ground as part of the process to install a SET. The SETs provide data to model the fate of the marsh in the face of rising water levels and ultimately provide insight into its restoration.

Surface Elevation Table Installation

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