Evaluating Water Levels in the Northern Atlantic Coastal Plain using National Groundwater Monitoring Network Data
Data currently available for the NACP in the NGWMN are provided by water resources agencies in seven states. Differences in the procedures used to collect data and classify sites are presented because they affect the use of the data. Available water-level data for wells in the NACP from the NGWMN are used to begin to address questions listed in the Network Objectives section of the NGWMN Framework Document (2013). Spatial variations in water-level changes are shown using maps of changes observed over the past 10 and 30 years, respectively. Selected hydrographs over the extent of the aquifer system are shown to complement the change maps. Water-level change maps over the past 30 years in each of the five major aquifers of the NACP show the variability within the aquifer system. The current status of water-levels is shown by visualizing the most recent water-level in comparison to long-term monthly statistics. Other potential uses of NGWMN data in the NACP will be briefly presented.