cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5066/p9hzwi8s
title: Simulations of the groundwater-flow system in the Cache and Grand Prairie Critical Groundwater Areas, northeastern Arkansas (ver. 2.0, November 2024)

description: The Mississippi Alluvial Plain (MAP) is one of the most important agricultural regions in the United States and underlies about 32,000 square miles of Missouri, Kentucky, Tennessee, Mississippi, Louisiana, and Arkansas. The MAP region supports a multibillion-dollar agricultural industry. The MAP is part of the Mississippi Embayment with several water-bearing units that make up the Mississippi Embayment Regional Aquifer System (MERAS). These water bearing units include the Mississippi River Valley Alluvial aquifer, Claiborne aquifers and Wilcox aquifers. Two areas in northeastern Arkansas, the Cache and Grand Prairie areas have been designated as critical groundwater areas because of decades of groundwater declines that resulted from past and current water use. The objective of the report associated with this data release is to document and describe the construction, calibration, and results of two inset groundwater-flow models developed for the Cache River Critical Groundwater Area and Grand Prairie Critical Groundwater Area using the latest MODFLOW-6 code, this data release publishes these two models. Both models derived boundary conditions from the parent MERAS 3 regional model to provide higher resolution simulations in the Cache and Grand Prairie focus areas. This data release has two child items, one for the Cache model and another for the Grand Prairie model.

The Cache model data release also contains versions of model runs that support a Groundwater Journal paper titled “Effects of auto-adaptive localization on a model calibration using ensemble methods.”
DOI: 10.5066/p9wzo452
title: Geodatabase of the datasets used to represent the six subunits of the Texas Coastal Uplands and Mississippi Embayment aquifer system, Alabama, Arkansas, Illinois, Kentucky, Louisiana, Mississippi, Missouri, Tennessee, and Texas

description: These data were released prior to the October 1, 2016 effective date for the USGS&rsquo;s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release.  This geodatabase includes spatial datasets that represent the Texas Coastal Uplands and Mississippi Embayment aquifer system in the States of Alabama, Arkansas, Illinois, Kentucky, Louisiana, Mississippi, Missouri, Tennessee, and Texas. Included are: (1) polygon extents; datasets that represent the aquifer system extent, the entire extent subdivided into subareas or subunits, and any polygon extents of special interest (outcrop areas, no data available, [...]
DOI: 10.5066/p13kbjwz
title: Aquifer framework datasets for the Willamette Lowland basin-fill aquifer, Oregon and Washington

description: 

The Willamette Lowland basin-fill aquifers (hereinafter referred to as the Willamette aquifer) is located in Oregon and in southern Washington. The aquifer is composed of unconsolidated deposits of sand and gravel, which are interlayered with clay units. The aquifer thickness varies from less than 100 feet to 800 feet. The aquifer is underlain by basaltic-rock. Cities such as Portland, Oregon, depend on the aquifer for public and industrial use (HA 730-H).
 
This product provides source data for the Willamette aquifer framework, including: 
Georeferenced images: 
1. i_08WLMLWD_bot.tif: Georeferenced figure of altitude contour lines representing the bottom of the Willamette aquifer. The original figure was from Professional Paper 1424-A, Plate 2 (1424-A-P2). The contour lines from this figure were digitized to make the file c_08WLMLWD_bot.shp, and the fault lines were digitized to make f_08WLMLWD_bot.shp.
 
Extent shapefiles: 
1. p_08WLMLWD.shp: Polygon shapefile containing the areal extent of the Willamette aquifer (Willamette_AqExtent). The original shapefile was modified to create the shapefile included in this data release. It was modified to only include the Willamette Lowland portion of the aquifer. The extent file contains no aquifer subunits.
 
Contour line shapefiles: 
1. c_08WLMLWD_bot.shp: Contour line dataset containing altitude values, in feet, referenced to National Geodetic Vertical Datum of 1929 (NGVD29), across the bottom of the Willamette aquifer. These data were used to create the ra_08WLMLWD_bot.tif raster dataset.
 
Fault line shapefiles:
1. f_08WLMLWD_bot.shp: Fault line dataset containing fault lines across the bottom of the Willamette aquifer. These data were not used in raster creation but were included as supplementary information. 
 
Altitude raster files: 
1. ra_08WLMLWD_top.tif: Altitude raster dataset of the top of the Willamette aquifer. The altitude values are in meters reference to North American Vertical Datum of 1988 (NAVD88). The top of the aquifer is assumed to be land surface based on available data and was interpolated from the digital elevation model (DEM) dataset (NED, 100-meter).
2. ra_08WLMLWD_bot.tif: Altitude raster dataset of the bottom of the Willamette aquifer. The altitude values are in meters reference to NAVD88. This raster was interpolated from the c_08WLMLWD_bot.shp dataset.
 
Depth raster files: 
1. rd_08WLMLWD_top.tif: Depth raster dataset of the top of the Willamette aquifer. The depth values are in meters below land surface (NED, 100-meter). The top of the aquifer is assumed to be land surface based on available data.
2. rd_08WLMLWD_bot.tif : Depth raster dataset of the bottom of the Willamette aquifer. The depth values are in meters below land surface (NED, 100-meter).
DOI: 10.5066/p13dwa86
title: Inset models used to evaluate the effects of layering configuration on model calibration from 1900 to 2018, and assess managed aquifer recharge near Shellmound, Mississippi, from 2019 to 2050

description: The U.S. Geological Survey (USGS), in cooperation with the Mississippi Department of Environmental Quality (MDEQ), have developed a high-resolution inset groundwater flow model for the Mississippi River delta as part of an interdisciplinary collaboration, coordinated by the Mississippi Alluvial Plain (MAP) project to provide a tool that stakeholders can use to support water resources management decisions. This data release provides the input and export files for the final calibrated model as well as for forecast models for the area near Shellmound, Mississippi. This inset numerical groundwater flow model was developed from the recently completed delta model as part of the Mississippi Alluvial Plain Study. The development of the model inputs and outputs and calibration can be found in the associated U.S. Geological Survey Scientific Investigations Report (Guira and others, 2025). Instructions for reconstructing the original directory structure and running the models included in this data release and described in the model documentation report can be found in the readme.txt file which can be downloaded as part of this data release.
DOI: 10.5066/p9wpp01s
title: Data from maps of water-level changes in the High Plains aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming, predevelopment (about 1950) to 2019 and 2017 to 2019

description: The High Plains aquifer underlies 111.8 million acres (about 175,000 square miles) in parts of eight States: Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. Water-level declines began in parts of the High Plains aquifer soon after the beginning of substantial irrigation with groundwater in the aquifer area 
(about 1950). This data release contains the data used to map water-level changes and calculate change in recoverable water in storage in the High Plains aquifer from predevelopment (about 1950) to 2019 and from 2017 to 2019. This study was funded by the U.S. Geological Survey Groundwater and Streamflow Information Program.
DOI: 10.5066/p16pmspw
title: Aquifer framework datasets used to represent the Roswell Basin aquifer system, New Mexico

description: 

The Roswell Basin aquifer system is located in southeastern New Mexico. It is composed of an alluvial aquifer and an underlying carbonate-rock aquifer. The aquifer covers an area of about 2,200 square miles and the alluvial aquifer covers about 1,200 square miles of the eastern half of this area. The alluvial aquifer primarily consists of Quaternary sediments and the carbonate-rock aquifer consists of the San Andres Limestone. Both aquifers offer highly productive groundwater wells that are extensively used for agricultural, industrial, and municipal use (HA 730-C).
  
This product provides source data for the Roswell Basin aquifer system framework, including: 
Georeferenced images: 
1. i_43RSWLBS_top.tif: Digitized figure of altitude contour lines representing the top of the Roswell Basin aquifer system. The original figure was from the Geohydrologic Framework of the Roswell Ground-water Basin report (Welder, 1983). 
 
Extent shapefiles:
1. p_43RSWLBS.shp: Polygon shapefile containing the areal extent of the Roswell Basin aquifer system. This shapefile was sourced from Roswell_AqExtent and was modified based off of (Welder, 1983). The extent file contains no aquifer subunits.
 
Contour line shapefiles: 
1. c_43RSWLBS_top.shp: Contour line dataset containing altitude values, in feet reference to National Geodetic Vertical Datum of 1929 (NGVD29), across the top of the Roswell Basin aquifer system. These data were used to create the ra_43RSWLBS_top.tif raster dataset.
 
Altitude raster files: 
1. ra_43RSWLBS_top.tif: Altitude raster dataset of the top of the Roswell Basin aquifer system. The altitude values are in meters reference to North American Vertical Datum of 1988 (NAVD88). This file was interpolated from the contour line dataset (Welder, 1983).
2. ra_43RSWLBS_bot.tif: Altitude raster dataset of the bottom of the Roswell Basin aquifer system. The altitude values are in meters reference to NAVD88.
 
Depth raster files: 
1. rd_43RSWLBS_top.tif: Depth raster dataset of the top of the Roswell Basin aquifer system.  The depth values are in meters below land surface (NED, 100-meter).
2. rd_43RSWLBS_bot.tif: Depth raster dataset of the bottom of the Roswell Basin aquifer system.  The depth values are in meters below land surface (NED, 100-meter).
DOI: 10.5066/p1p7pvnz
title: Aquifer framework datasets used to represent the Marshall aquifer, Michigan

description: 

The Marshall aquifer underlies much of the Lower Peninsula of Michigan and has a maximum thickness of 493 feet (Lampe, 2009). The aquifer consists mainly of medium-grained sandstone and is overlain by Pennsylvanian-age rocks and glacial deposits and underlain by the Devonian-Mississippian-age confining unit. The Marshall aquifer is one of the most productive aquifers in the state where unconfined conditions occur (HA 730-J). 
 
This product provides source data for the Marshall aquifer framework, including:
Extent shapefiles: 
1. p_32MRSHLL.shp: Polygon shapefile containing the areal extent of the Marshall aquifer (32MRSHLL_AqExtent). The extent file contains no aquifer subunits.
 
Point shapefiles: 
1. po_32MRSHLL_top.shp: Point dataset containing altitude values, in feet reference to North American Vertical Datum of 1988 (NAVD88), across the top of the Marshall aquifer (Lampe, 2009). These data were used to create the ra_32MRSHLL_top.tif raster dataset.
2. po_32MRSHLL_bot.shp: Point dataset containing altitude values, in feet reference to NAVD88, across the bottom of the Marshall aquifer (Lampe, 2009). These data were used to create the ra_32MRSHLL_bot.tif raster dataset.
 
Altitude raster files: 
1. ra_32MRSHLL_top.tif : Altitude raster dataset of the top of the Marshall aquifer.  The altitude values are in meters reference to NAVD88 vertical datum. This raster was interpolated from the po_32MRSHLL_top.shp point dataset.
2. ra_32MRSHLL_bot.tif: Altitude raster dataset of the bottom of the Marshall aquifer.  The altitude values are in meters reference to NAVD88 vertical datum. This raster was interpolated from the po_32MRSHLL_bot.shp point dataset.
 
Depth raster files: 
1. rd_32MRSHLL_top.tif: Depth raster dataset of the top of the Marshall aquifer.  The depth values are in meters below land-surface (NED, 100-meter).
2. rd_32MRSHLL_bot.tif: Depth raster dataset of the bottom of the Marshall aquifer.  The depth values are in meters below land-surface (NED, 100-meter).
DOI: 10.5066/p1qqnwrs
title: Aquifer framework datasets used to represent the Pecos River Basin alluvial aquifer, Texas, New Mexico

description: 
The Pecos River Basin alluvial aquifer, hereinafter referred to as the "Pecos aquifer", is located in western Texas and southeastern New Mexico. The aquifer is primarily composed of alluvial sand and gravel deposits mantled by sand and silt.  The Pecos aquifer overlies Permian, Triassic, and Cretaceous-age rocks. The saturated thickness of the aquifer ranges from 0 to 1000 feet.  The aquifer can provide highly productive wells where transmissivity is high and saturated thickness is adequate (HA730-E). 
 
This data release contains the following feature datasets:
Georeferenced images: 
1. i_12PCSRVR_bot.tif: Scanned figure of altitude contour lines representing the bottom of the Pecos aquifer. The original figure was from the Groundwater Atlas (HA730-E) figure 28. 
 
Extent shapefiles: 
1. p_12PCSRVR.shp: Polygon shapefile containing the areal extent of the Pecos aquifer (Pecos_AqExtent).  The extent file contains no aquifer subunits.
 
Contour line shapefiles:  
1. c_12PCSRVR_bot.shp: Contour line dataset containing altitude values, in feet reference to National Geodetic Vertical Datum of 1929 (NGVD29), across the bottom of the Pecos aquifer (HA730-E). These data were used to create the ra_12PCSRVR_bot.tif altitude raster dataset.
 
Altitude raster files: 
1. ra_12PCSRVR_top.tif: Altitude raster dataset of the top of the Pecos aquifer. The altitude values are in meters reference to North American Vertical Datum of 1988 (NAVD88). The top of the aquifer is assumed to be land surface (NED, 100-meter) based on available data. 
2. ra_12PCSRVR_bot.tif: Altitude raster dataset of the bottom of the Pecos aquifer. The altitude values are in meters reference to NAVD88.
 
Depth raster files: 
1. rd_12PCSRVR_top.tif: Depth raster dataset of the top of the Pecos aquifer. The depth values are in meters below land surface (NED, 100-meter). The top of the aquifer is assumed to be at land surface (NED, 100-meter) based on available data.
2. rd_12PCSRVR_bot.tif: Depth raster dataset of the bottom of the Pecos aquifer. The depth values are in meters below land surface (NED, 100-meter).
DOI: 10.5066/p14jlebv
title: Aquifer framework datasets used to represent the Central Oklahoma aquifer, Oklahoma

description: The Central Oklahoma aquifer underlies an area of about 2,900 square miles in central Oklahoma. The aquifer is in the Central Lowland Physiographic Province and consists of Garber Sandstone and the Wellington Formation, which are part of the Sumner Group of Permian age. The maximum thickness of the aquifer is about 1,000 feet with a saturated thickness ranging from 150 to 650 feet.  The aquifer is an important source of water for public, domestic, and commercial use (HA 730-E).
 
This product provides source data for the Central Oklahoma aquifer framework, including:
Georeferenced images: 
1. i_27CNRLOK_bot.tif: Digitized figure of altitude contour lines representing the bottom of the Central Oklahoma aquifer. The original figure was from the Hydrologic Atlas 74, Plate 2, Figure 4 (HA_724_P2_F4). 
 
Extent shapefiles: 
1. p_27CNRLOK.shp: Polygon shapefile containing the areal extent of the Central Oklahoma aquifer (OFR_96-454). The extent file contains no aquifer subunits.
(Special Note) Other aquifer datasets included in the Brackish Water Project (PP1833) used the 'Ground Water Atlas of the United States' (HA 730-E) as a source for aquifer extents (Central_Oklahoma_AqExtent). This project sourced the extent from Open-File Report 96-454 (OFR_96-454) as it better matched the included top and bottom altitude of aquifer contour datasets. 
 
Contour line shapefiles: 
1. c_27CNRLOK_top.shp: Contour line dataset containing altitude values, in feet reference to National Geodetic Vertical Datum of 1929 (NGVD29), across the top of the Central Oklahoma aquifer (OFR_96-454). These data were used to create the ra_27CNRLOK_top.tif raster dataset.
2. c_27CNRLOK_bot.shp: Contour line dataset containing altitude values, in feet reference to NGVD29, across the bottom of the Central Oklahoma aquifer (HA_724_P2_F4). These data were used to create the ra_27CNRLOK_bot.tif raster dataset.
 
Altitude raster files: 
1. ra_27CNRLOK_top.tif: Altitude raster dataset of the top of the Central Oklahoma aquifer.  The altitude values are in meters reference to North American Vertical Datum of 1988 (NAVD88). This raster was interpolated from the c_27CNRLOK_top.shp dataset.
2. ra_27CNRLOK_bot.tif: Altitude raster dataset of the bottom of the Central Oklahoma aquifer. The altitude values are in meters reference to NAVD88. This raster was interpolated from the c_27CNRLOK_bot.shp dataset.
 
Depth raster files: 
1. rd_27CNRLOK_top.tif: Depth raster dataset of the top of the Central Oklahoma aquifer.  The depth values are in meters below land surface (NED, 100-meter).
2. rd_27CNRLOK_bot.tif: Depth raster dataset of the bottom of the Central Oklahoma aquifer.  The depth values are in meters below land surface (NED, 100-meter).
DOI: 10.5066/p1ufkjuf
title: Aquifer framework datasets used to represent the Rush Springs aquifer, Oklahoma, New Mexico

description: 

The Rush Springs aquifer resides in west-central Oklahoma with an area of about 1,400 square miles. The aquifer consists of the Rush Springs Sandstone and the Marlow Formation which are part of the Whitehorse Group of Permian age (HA 730-E). The Rush Springs Sandstone has a maximum thickness of about 300 feet and the Marlow Formation has a maximum thickness of about 125 feet. The aquifer is primarily and extensively used for irrigation (HA 730-E).  
 
This product provides source data for the Rush Springs aquifer framework, including:
Georeferenced images: 
1. i_26RSHSPG_bot.tif: Scanned figure of altitude contour lines representing the bottom of the Rush Springs aquifer. The original figure was from the Water-Resources Investigations Report 98-4081 (WRIR, 98-4081) figure 6. 
 
Extent shapefiles: 
1. p_26RSHSPG.shp: Polygon shapefile containing the areal extent of the Rush Springs aquifer (Rush_Springs_AqExtent). The extent file contains no aquifer subunits.
 
Contour line shapefiles: 
1. c_26RSHSPG_top.shp: Contour line dataset containing altitude values, in feet reference to National Geodetic Vertical Datum of 1929 (NGVD29), across the top of the Rush Springs aquifer. This dataset was sourced from Rush_Springs_AqExtent and was used to create ra_26RSHSPG_top.tif raster dataset.
2. c_26RSHSPG_bot.shp: Contour line dataset containing altitude values, in feet reference to NGVD29, across the bottom of the Rush Springs aquifer. This dataset was sourced from WRIR, 98-4081 and was used to create ra_26RSHSPG_bot.tif raster dataset.
 
Altitude raster files: 
1. ra_26RSHSPG_top.tif: Altitude raster dataset of the top of the Rush Springs aquifer. The altitude values are in meters reference to North American Vertical Datum of 1988 (NAVD88). This raster was interpolated from the c_26RSHSPG_top.shp dataset.
2. ra_26RSHSPG_bot.tif: Altitude raster dataset of the bottom of the Rush Springs aquifer. The altitude values are in meters reference to NAVD88. This raster was interpolated from the c_26RSHSPG_bot.shp dataset.
 
Depth raster files: 
1. rd_26RSHSPG_top.tif: Depth raster dataset of the top of the Rush Springs aquifer. The depth values are in meters below land surface (NED, 100-meter).
2. rd_26RSHSPG_bot.tif: Depth raster dataset of the bottom of the Rush Springs aquifer. The depth values are in meters below land surface (NED, 100-meter).
DOI: 10.5066/p1tfdna5
title: Aquifer framework datasets used to represent the Kingshill aquifer, Island of St. Croix

description: 
The Kingshill aquifer resides under St. Croix, an Island in the U.S. Virgin Islands. The Island of St. Croix is mountainous in the northwestern and eastern regions of the island and the central and southwest regions contain rolling hills and plains. The Kingshill aquifer underlies the plains of St. Croix. The aquifer is composed primarily of limestone and marl and has a maximum saturated thickness of 200 feet. The aquifer doesn't produce large quantities of water and much of the groundwater is suboptimal for human consumption, but it is the primary source of water in the Virgin Islands (HA 730-N).    
 
This product provides source data for the U.S. Virgin Islands, Island of St. Croix, Kingshill aquifer framework including:
Georeferenced image: 
1. i_56KNGSHL_bot.tif: Digitized figure of altitude contour lines representing the bottom of the Kingshill aquifer. This figure also includes the Kingshill aquifer extent. The original figure was from the Groundwater Atlas (HA 730-N) figure 114. 
 
Extent shapefiles: 
1. p_56KNGSHL.shp: Polygon shapefile containing the areal extent of the Kingshill aquifer (HA 730-N). The original figure was from the Groundwater Atlas (HA 730-N) figure 114.
 
Contour line shapefile: 
1. c_56KNGSHL_bot.shp: Contour line dataset containing altitude values, in feet reference to National Geodetic Vertical Datum of 1929 (NGVD29), across the bottom of the Kingshill aquifer. These data were sourced from HA 730-N and were used to create the ra_56KNGSHL_bot.tif raster dataset.
 
Altitude raster files: 
1. ra_56KNGSHL_top.tif: Altitude raster dataset of the top of the Kingshill aquifer. Top of aquifer was assumed to be equal with land surface, but it should be noted that HA 730-N indicates about 25 percent of aquifer is overlain with a blanket of alluvium, alluvial fan, debris flow, and slope wash deposits as much as 80 feet thick. This raster was created using the Digital Elevation model (DEM) dataset (NED, 100-meter) and the altitude values are in meters reference to North American Vertical Datum of 1988 (NAVD88).
2. ra_56KNGSHL_bot.tif: Altitude raster dataset of the bottom of the Kingshill aquifer. This raster was interpolated from the c_56KNGSHL_bot.shp file and the altitude values are in meters reference to NAVD88.
 
Depth raster files: 
1. rd_56KNGSHL_top.tif: Depth raster dataset of the top of the Kingshill aquifer. The depth values are in meters below land surface (NED, 100-meter). All values in this raster are “0” because it was assumed the top of the aquifer was equal with land surface, but it should be noted that HA 730-N indicates about 25 percent of aquifer is overlain with a blanket of alluvium, alluvial fan, debris flow, and slope wash deposits as much as 80 feet thick.
2. rd_56KNGSHL_bot.tif: Depth raster dataset of the bottom of the Kingshill aquifer. The depth values are in meters below land surface (NED, 100-meter).