Missouri Department of Natural Resources (DNR), Missouri Geological Survey (MGS), Geological Survey Program (GSP)20151120MO 2015 Depth to Groundwater Change 1970 2000 (SHP)vector digital dataftp://msdis.missouri.edu/pub/Geological_Geophysical/MO_2015_Depth_to_Groundwater_Change_1970_2000_shp.zipDrainage of swamplands and increases in high-yield agricultural pumping in southeast Missouri over a 30 year period may have affected water table depths and potentially altered the risk of subsequent liquefaction following an earthquake. Modern agriculture practices associated with prolific rice cultivation has increased the implementation of irrigation wells. It was unknown if recent high-yield pumping has affected depth to groundwater extensively in the study area. The purpose of this map is to show changes in depth to groundwater from 1970 to 2000. Changes in depths to groundwater were derived from existing well log data.To show changes in depth to groundwater from 1970 to 2000, potentially related to agricultural pumping within the Missouri portion of the Mississippi Embayment.The metadata content associated with this data set was reviewed by Elizabeth Kelly on 20151203. The metadata content review is intended to ensure that all of the required content is present. The components comprising the metadata document were reviewed by Elizabeth Kelly on 20151203. The metadata component review is intended to ensure that required metadata components are consistent and understandable to data consumers.20151120publication dateNone planned-90.738321-89.09627137.31046235.965071static water leveldepth to groundwateralluvial aquiferMississippi EmbaymentliquefactionNone.geoscientificInformationSoutheast (SE)Missouri (MO)Southeast Missouri (SEMO)None.NoneAlthough all data in this data set have been compiled by the Missouri Department of Natural Resources, no warranty, expressed or implied, is made by the department as to the accuracy of the data and related materials.Thomas HerbstMissouri Department of Natural Resources, Missouri Geological Survey, Geological Survey ProgramGeologistmailing and physical addressP.O. Box 250111 Fairgrounds RoadRollaMissouri65401United States(573) 368-2484800-735-2966(573) 368-2111thomas.herbst@dnr.mo.govMonday through Friday, 8 a.m. to 5 p.m. Central timeMissouri Department of Natural Resources (DNR)Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.5.4400UnclassifiedShapefileNoneThe locations of the points in the data sets used to create isobathic contours for post-2000 static water level (SWL_POST_2000) and pre-1971 static water level (SWL_PRE_1971) data sets were taken from Public Land Survey System (PLSS) descriptions of Township, Range, Section, and Section Subdivisions, and Global Positioning System (GPS). The horizontal positional accuracy of isobaths is contingent on the accuracy with which well drillers report the well locations to the Missouri Department of Natural Resources. The accuracy of this derivative data set is contingent on the accuracy of the aforementioned data sets.This shapefile was derived from pre-1971 well log data (LOGMAIN) and post-2000 well data (CERTWELLS). Models of static water level (SWL) were used to create a differential model of the change in depth to groundwater. From this, a set of derivative contours was created. Contouring within Crowley's Ridge and Bird's Point-New Madrid Floodway was excluded due to the absence of the alluvial aquifer at Crowley's Ridge and past activation of the Floodway distorting water levels and sediment thicknesses.20151120Thomas HerbstMissouri Department of Natural Resources (DNR), Missouri Geological Survey (MGS), Geological Survey Program (GSP)Geologistphysical address111 Fairgrounds RoadRollaMissouri65401United States(573) 368-2484800-735-2966(573) 368-2111thomas.herbst@dnr.mo.govMonday through Friday, 8 a.m. to 5 p.m. Central timeString1023coordinate pair0.0000000.000000metersNorth American Datum of 1983Geodetic Reference System 806378137.000000298.257222CHANGE IN DEPTH TO GW 1970-2000Change in depth to groundwater for alluvial aquifer in southeast Missouri (bootheel)Missouri Department of Natural ResourcesFIDInternal feature number.EsriSequential unique whole numbers that are automatically generated.Sequential unique whole numbers that are automatically generated.ShapeFeature geometry.EsriCoordinates defining the features.Coordinates defining the features.CONTOURChange in depth to groundwater in feet. Negative values indicate positive changes in groundwater elevation and a rising of the water table. Positive values indicate a negative change in groundwater elevation and a lowering of the water table.Downloadable dataAlthough all data in this data set have been compiled by the Missouri Department of Natural Resources, no warranty, expressed or implied, is made by the department as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the department in the use of these data or related materials.1.19720151120Thomas HerbstMissouri Department of Natural Resources (DNR), Missouri Geological Survey (MGS), Geological Survey Program (GSP)Geologistmailing and physical addressP.O. Box 250111 Fairgrounds RoadRollaMissouri65401United States(573) 368-2484800-735-2966(573) 368-2111thomas.herbst@dnr.mo.govMonday through Friday, 8 a.m. to 5 p.m. Central timeFGDC Content Standards for Digital Geospatial MetadataUnclassifiedhttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata ProfileTo show changes in depth to groundwater from 1970 to 2000, potentially related to agricultural pumping within the Missouri portion of the Mississippi Embayment.<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Drainage of swamplands and increases in high-yield agricultural pumping in southeast Missouri over a 30 year period may have affected water table depths and potentially altered the risk of subsequent liquefaction following an earthquake. Modern agriculture practices associated with prolific rice cultivation has increased the implementation of irrigation wells. It was unknown if recent high-yield pumping has affected depth to groundwater extensively in the study area. The purpose of this map is to show changes in depth to groundwater from 1970 to 2000. Changes in depths to groundwater were derived from existing well log data.</SPAN></P></DIV></DIV></DIV>Missouri Department of Natural Resources (DNR)Change In Depth to Groundwater 1970-2000static water leveldepth to groundwateralluvial aquiferMississippi Embaymentliquefaction<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Although all data in this data set have been compiled by the Missouri Department of Natural Resources, no warranty, expressed or implied, is made by the department as to the accuracy of the data and related materials.</SPAN></P></DIV></DIV></DIV>20160105729200015000000050001.0FGDC