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Digital surfaces of the bottom altitude and thickness of the Mississippi River Valley alluvial aquifer and site data within the Mississippi Alluvial Plain project region

Dates

Publication Date
Start Date
1930
End Date
2017

Citation

Torak, L.J., and Painter, J.A., 2019, Digital surfaces of the bottom altitude and thickness of the Mississippi River Valley alluvial aquifer and site data within the Mississippi Alluvial Plain project region: U.S. Geological Survey data release, https://doi.org/10.5066/P9D9XR5F.

Summary

Bottom altitudes of the Mississippi River Valley alluvial aquifer (MRVA) were compiled from interpretations of subsurface geophysical logs (log picks) at about 10,000 boreholes and wells located throughout the Mississippi Alluvial Plain (MAP) that were available from previous investigations. Five sources of the bottom altitude data are listed numerically in the Cross Reference section (below) and correspond with the Ref_code listed in the .shp dataset. Borehole geophysical data (log picks) were referenced (corrected) to the National Elevation Dataset (NED) 10-meter digital elevation model (DEM; https://nationalmap.gov/elevation.html). Log picks that required a DEM correction of less than 20 feet were retained for use in a subsequent [...]

Contacts

Point of Contact :
Jaime A Painter
Originator :
Lynn J Torak, Jaime A Painter
Metadata Contact :
Lynn J Torak
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
USGS Mission Area :
Water Resources
SDC Data Owner :
Lower Mississippi-Gulf Water Science Center

Attached Files

Click on title to download individual files attached to this item.

crowleys_conn_xy_wgs84_gs.csv 22.82 KB
mrva_bott_alt.asc 1.54 MB
mrva_bott_alt_estvar.asc 1.83 MB
mrva_thickness.asc 1.83 MB
mrva_thickness_estvar.asc 1.85 MB
metadata.xml
Original FGDC Metadata

View
42.05 KB
Shapefile: MRVA_BotAlt_Thickness_Data.zip
MRVA_BotAlt_Thickness_Data.CPG 5 Bytes
MRVA_BotAlt_Thickness_Data.dbf 6.36 MB
MRVA_BotAlt_Thickness_Data.prj 462 Bytes
MRVA_BotAlt_Thickness_Data.sbn 94.82 KB
MRVA_BotAlt_Thickness_Data.sbx 6.39 KB
MRVA_BotAlt_Thickness_Data.shp 254.18 KB
MRVA_BotAlt_Thickness_Data.shx 72.69 KB
MRVA_BotAlt_Thickness_Data.sd 1 MB

Purpose

The datasets were used to produce interpolated surfaces for the MRVA bottom altitude and thickness as part of a USGS Water Availability and Use Science Program (WAUSP) five-year effort to assess groundwater availability and project future sustainability of water resources in the MAP region. No new data were collected for the MAP study.

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9D9XR5F

Shapefile Extension

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