Datasets used to map the potentiometric surface, Mississippi River Valley alluvial aquifer, spring 2020

Publication Date

2021-09-01

McGuire, V.L., Seanor, R.C., Asquith, W.H., Strauch, K.R., Nottmeier, A.M., Thomas, J.C., Tollett, R.W., and Kress, W.H., 2021, Datasets used to map the potentiometric surface, Mississippi River Valley alluvial aquifer, spring 2020: U.S. Geological Survey data release, https://doi.org/10.5066/P9CXDIPL.

Type: Related Primary Publication Type: Citation

The purpose of this study was to prepare and present a potentiometric-surface map for the MRVA using groundwater-altitude data or daily mean groundwater altitude from wells measured generally in spring 2020, which is after water levels have generally recovered from pumping in the previous irrigation season and before pumping begins for the current irrigation season, and using the altitude of the top of the water surface in rivers in the area, hereinafter referred to as “surface-water altitude,” generally on April 9, 2020 from streamgages in the area. In this report, the maps the MRVA aquifer’s uppermost surface are termed potentiometric-surface maps as opposed to a water-table maps because although the MRVA aquifer generally exhibits characteristics of unconfined conditions, where surface-water features may or may not be hydraulically connected, it also exhibits characteristics of confined or semiconfined conditions in some areas at least during part of the year, however, the location of these areas is not well understood or defined.

ScienceBase WMS

• USGS Data Release Products
• USGS Lower Mississippi-Gulf Water Science Center

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