Geographic information system (GIS) data for 2016 Scientific Investigations Map 3365,"Water-Level Altitudes 2016 and Water-Level Changes in the Chicot, Evangeline, and Jasper Aquifers and Compaction 1973-2015 in the Chicot and Evangeline Aquifers, Houston-Galveston Region, Texas" by Mark C. Kasmarek, Jason K. Ramage, and Michaela R. Johnson The GIS data are contained in two separate compressed files: Geodatabase version: GIS_Data_for_SIM3365_2016WaterLevelChange_Series_GDB.zip Shapefile version: GIS_Data_for_SIM3365_2016WaterLevelChange_Series_SHP.zip Each of these versions contains a metadata directory containing Federal Geographic Data Committee compliant metadata in *.txt versions. \metadata\GIS_Data_for_SIM3365_2016WaterLevelChange_Series.txt The data are separated into three feature datasets (three directories for shapefiles) by aquifer that contain the individual feature classes (shapefiles). Chicot aquifer - (feature dataset name/shapefile directory name) Feature classes/shapefiles: ch16pt - water-level altitudes, 2016 ch16arc - approximate water-level altitudes, 2016 ch1516pt - water-level changes, 2015-16 ch1116pt - point values of water-level changes, 2011-16 ch1116arc - water-level changes, 2011-16 ch9016pt - point values of water-level changes, 1990-2016 ch9016arc - water-level changes, 1990-2016 ch7716pt - point values of water-level changes, 1977-2016 ch7716arc - water-level changes, 1977-2016 Evangeline aquifer - (feature dataset name/shapefile directory name) Feature classes/shapefiles: ev16pt - water-level altitudes, 2016 ev16arc - approximate water-level altitudes, 2016 ev1516pt - water-level changes, 2015-16 ev1116pt - point values of water-level changes, 2011-16 ev1116arc - water-level changes, 2011-16 ev9016pt - point values of water-level changes, 1990-2016 ev9016arc - water-level changes, 1990-2016 ev7716pt - point values of water-level changes, 1977-2016 ev7716arc - water-level changes, 1977-2016 Jasper aquifer - (feature dataset name/shapefile directory name) Feature classes/shapefiles: ja16pt - water-level altitudes, 2016 ja16arc - approximate water-level altitudes, 2016 ja1516pt - water-level changes, 2015-16 ja1116pt - point values of water-level changes, 2011-16 ja1116arc - water-level changes, 2011-16 ja0016pt - point values of water-level changes, 2000-16 ja0016arc - water-level changes, 2000-16