SEAWAT Model of Flow and Chloride Transport in the "1,500-Foot", "2,400-Foot", and "2,800-Foot" Sands of the Baton Rouge Area, Louisiana


Identification Information:
Citation:
Citation Information:
Originator: Charles E. Heywood
Publication Date: 2019
Title: SEAWAT Model of Flow and Chloride Transport in the "1,500-Foot", "2,400-Foot", and "2,800-Foot" Sands of the Baton Rouge Area, Louisiana
Geospatial Data Presentation Form: groundwater model
Publication Information:
Publication Place: Reston, VA, USA
Publisher: U.S. Geological Survey
Online Linkage: https://doi.org/10.5066/P9URJ38Q
Larger Work Citation:
Citation Information:
Originator: Charles E. Heywood
Originator: Maxwell A. Lindaman
Originator: John K. Lovelace
Publication Date: 2019
Title: Simulation of Groundwater Flow and Chloride Transport in the “1,500-Foot” Sand, “2,400-Foot” Sand, and “2,800-Foot” Sand of the Baton Rouge Area, Louisiana
Geospatial Data Presentation Form: Publication
Series Information:
Series Name: Scientific Investigations Report
Issue Identification: 2019-5102
Publication Information:
Publication Place: Reston, VA, USA
Publisher: U.S. Geological Survey
Online Linkage: https://doi.org/10.3133/sir20195102
Description:
Abstract: An updated three-dimensional, groundwater-flow and chloride-transport model (SEAWAT) of the Southern Hills regional aquifer system in southeastern Louisiana and southwestern Mississippi was developed to examine the effects of groundwater withdrawals on the rate and pathways of saltwater migration in the “1,500-foot” sand, “2,400-foot” sand, and “2,800-foot” sand. New interpretations of stratigraphic correlations amongst geophysical well logs were utilized to revise a hydrogeologic-framework that delineates the depth and thickness variations of aquifers and confining units in the Southern Hills regional aquifer system. Regional groundwater flow throughout the Southern Hills regional aquifer system was first simulated with MODFLOW, and flow-model parameters were calibrated to 8,810 water levels observed through 2016 with the parameter-estimation code PEST++. Saltwater transport was subsequently simulated for the “1,500-foot” sand, “2,400-foot” sand, and “2,800-foot” sand with the variable-density code, SEAWAT. Chloride-concentration measurements were used as a proxy for the saltwater to formulate the concentration initial conditions and calibrate the transport-model parameters. Three hypothetical groundwater management scenarios are included in the archive. These scenarios simulate the future water levels and chloride concentrations within the “1,500-foot” sand, “2,400-foot” sand, and “2,800-foot” sand if groundwater withdrawals were to continue at 2016 rates or if one of two proposed modifications to the 2016 withdrawals from the “1,500-foot” sand or “2,800-foot” sand were to be enacted. The model was calibrated to water levels measured in aquifers beneath the “400-foot” sand, and water levels simulated in these aquifers could be used for various purposes, including predicting the effects of changing pumping rates. Water planners and managers need additional knowledge about the effects of groundwater withdrawals on the rate and pathways of saltwater migration and a tool to assess possible management strategies that could control further saltwater encroachment in the Baton Rouge area. This USGS data release contains all of the input and output files for the simulations described in the associated model documentation report (https://doi.org/10.3133/sir20195102).
Purpose: This groundwater model was created to simulate chloride transport, as well as, evaluate the aquifer-system water budget and the effects of groundwater withdrawals on water levels, flow directions, and the movement of saltwater in the “1,500-foot,” “2,400-foot,” and “2,800-foot” sands in the Baton Rouge area. The development of the model input and output files included in this data release are documented in the U.S. Geological Survey Scientific Investigations Report 2019-5102 (https://doi.org/10.3133/sir20195102)
Supplemental Information: Support is provided for correcting errors in the data release and clarification of the modeling conducted by the U.S. Geological Survey. Users are encouraged to review the model documentation report (https://doi.org/10.3133/sir20195102) to understand the purpose, construction, and limitations of this model. The models will run successfully only if the original directory structure is correctly restored. The model archive is broken into several pieces to reduce the likelihood of download timeouts. 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 ASCII file which can be downloaded as part of this data release.
Time Period of Content:
Time Period Information:
Range of Dates/Times:
Beginning Date: 19400101
Ending Date: 20161231
Currentness Reference: publication date
Status:
Progress: Complete
Maintenance and Update Frequency: Not planned
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -91.915925
East Bounding Coordinate: -90.447555
North Bounding Coordinate: 31.337561
South Bounding Coordinate: 30.242934
Keywords:
Theme:
Theme Keyword Thesaurus: USGS Thesaurus
Theme Keyword: usgsgroundwatermodel
Theme Keyword: MODFLOW-2005
Theme Keyword: Groundwater
Theme Keyword: InlandWaters
Theme Keyword: Groundwater Model
Theme Keyword: SEAWAT
Theme Keyword: Transport Model
Theme Keyword: salinity
Theme Keyword: water use
Theme Keyword: water budget
Theme Keyword: hydrogeology
Theme:
Theme Keyword Thesaurus: ISO 19115 Topic Category
Theme Keyword: geoscientificInformation
Theme Keyword: inlandWaters
Theme Keyword: environment
Place:
Place Keyword Thesaurus: Geographic Names Information Systems
Place Keyword: Baton Rouge
Place Keyword: Louisiana
Place Keyword: East Baton Rouge Parish
Place Keyword: West Baton Rouge Parish
Place Keyword: Pointe Coupee Parish
Place Keyword: West Feliciana Parish
Place Keyword: East Feliciana Parish
Place Keyword: Livingston Parish
Place Keyword: Ascension Parish
Place Keyword: Avoyelles Parish
Place Keyword: Concordia Parish
Place Keyword: Iberville Parish
Place Keyword: St. Helena Parish
Place Keyword: St. Landry Parish
Place Keyword: Tangipahoa Parish
Place Keyword: St. Martin Parish
Access Constraints: None. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from this data release.
Use Constraints: none
Point of Contact:
Contact Information:
Contact Person Primary:
Contact Person: John K Lovelace
Contact Organization: Southeast Region
Contact Position: Supervisory Hydrologist
Contact Address:
Address Type: mailing and physical
Address: 3535 S Sherwood Forest
City: Baton Rouge
State or Province: LA
Postal Code: 70816
Country: United States
Contact Voice Telephone: 225-298-5481 x3210
Contact Electronic Mail Address: jlovelac@usgs.gov
Browse Graphic:
Browse Graphic File Name: https://water.usgs.gov/GIS/browse/sir2019-5102Thumbnail.jpg
Browse Graphic File Description: Image of the model domain and active area of the model.
Browse Graphic File Type: jpg
Data Set Credit: Capital Area Groundwater Conservation Commission; Louisiana Department of Transportation and Development, Public Works and Water Resources Division; City of Baton Rouge and Parish of East Baton Rouge
Security Information:
Security Classification System: None
Security Classification: Unclassified
Security Handling Description: None
Cross Reference:
Citation Information:
Originator: Charles E. Heywood
Originator: Jason M. Griffith
Originator: John K. Lovelace
Publication Date: 2014
Title: Simulation of groundwater flow in the “1,500-foot” sand and “2,000-foot” sand, with scenarios to mitigate saltwater migration in the “2,000-foot” sand of the Baton Rouge area, Louisiana (ver. 1.1, April 2014)
Geospatial Data Presentation Form: Publication
Series Information:
Series Name: Scientific Investigations Report
Issue Identification: 2013–5227
Publication Information:
Publication Place: Reston, VA, USA
Publisher: U.S. Geological Survey
Online Linkage: http://doi.org/10.3133/sir20135227
Cross Reference:
Citation Information:
Originator: Charles E. Heywood
Originator: John K. Lovelace
Originator: Jason M. Griffith
Publication Date: 2015
Title: Simulation of groundwater flow and chloride transport in the “1,200-foot” sand with scenarios to mitigate saltwater migration in the “2,000-foot” sand in the Baton Rouge area, Louisiana (ver. 1.1, September 2015)
Geospatial Data Presentation Form: Publication
Series Information:
Series Name: Scientific Investigations Report
Issue Identification: 2015–5083
Publication Information:
Publication Place: Reston, VA, USA
Publisher: U.S. Geological Survey
Online Linkage: http://doi.org/10.3133/sir20155083
Data Quality Information:
Attribute Value Accuracy Information:
Attribute Accuracy Report: The model was calibrated to 8,810 water levels measured from 1916 through 2016 in 1,996 wells. About 80 percent (7,030) of the measurements, which were made in wells screened in aquifers deeper than the “400-foot” sand, were used to estimate parameters in the groundwater-flow model calibration. The remaining 20 percent (1,780) were from wells screened in the “400-foot” sand, and were used to evaluate the accuracy of the transient water levels specified for the top model layer. One well-bore flow measurement was used to constrain simulated intra-borehole flow. Chloride concentrations simulated in the “1,500-Foot”, “2,400-Foot”, and “2,800-Foot” were compared to chloride concentrations measured in wells in those aquifers.
Logical Consistency Report: No formal logical accuracy tests were conducted
Completeness Report: Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record and the associated model documentation report (https://doi.org/10.3133/sir20195102) for additional details.
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report: No formal positional accuracy tests were conducted
Vertical Positional Accuracy:
Vertical Positional Accuracy Report: No formal positional accuracy tests were conducted
Lineage:
Process Step:
Process Description: The process used to develop, calibrate, and apply the saltwater-intrusion model is fully described in the model documentation report (https://doi.org/10.3133/sir20195102).
Process Date: 2019
Spatial Data Organization Information:
Direct Spatial Reference Method: raster
Raster Object Information:
Raster Object Type: pixel
Spatial Reference Information:
Horizontal Coordinate System Definition:
Planar:
Map Projection:
Map Projection Name: Lambert Conformal Conic
Lambert Conformal Conic:
Standard Parallel: 30
Standard Parallel: 31
Longitude of Central Meridian: -91
Latitude of Projection Origin: 30
False Easting: 0
False Northing: 0
Planar Coordinate Information:
Planar Coordinate Encoding Method: row and column
Coordinate Representation:
Abscissa Resolution: 500
Ordinate Resolution: 500
Planar Distance Units: feet
Vertical Coordinate System Definition:
Altitude System Definition:
Altitude Datum Name: North American Datum of 1983
Altitude Resolution: 1
Altitude Units: feet
Altitude Encoding Method: Attribute values
Entity and Attribute Information:
Detailed Description:
Entity Type:
Entity Type Label: SIR2019_5102.shp
Entity Type Definition: ESRI Polygon shapefile
Entity Type Definition Source: U.S. Geological Survey
Attribute:
Attribute Label: Area
Attribute Definition: Text string indicating is polygon area is active or inactive in the model.
Attribute Definition Source: https://doi.org/10.3133/sir20195102
Attribute Domain Values:
Enumerated Domain:
Enumerated Domain Value: usgsgroundwatermodel
Enumerated Domain Value Definition: Delineation of active and inactive areas in the model.
Enumerated Domain Value Definition Source: https://doi.org/10.3133/sir20195102
Overview Description:
Entity and Attribute Overview: Heywood, C.E., 2019, SEAWAT Model of Flow and Chloride Transport in the “1,500-Foot”, “2,400-Foot”, and “2,800-Foot” Sands of the Baton Rouge Area, Louisiana: U.S. Geological Survey data release
Entity and Attribute Detail Citation: https://doi.org/10.5066/P96YE03Q
Distribution Information:
Distributor:
Contact Information:
Contact Person Primary:
Contact Person: Ask USGS -- Water Webserver Team
Contact Organization: U.S. Geological Survey
Contact Address:
Address Type: mailing and physical
Address: 445 National Center
City: Reston
State or Province: Virginia
Postal Code: 20192
Country: USA
Contact Voice Telephone: 1-888-275-8747 (1-888-ASK-USGS)
Contact Electronic Mail Address: https://water.usgs.gov/user_feedback_form.html
Distribution Liability: The data have been approved for release by the U.S. Geological Survey (USGS). Although the data have been subjected to rigorous review and are substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, the data are released on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from authorized or unauthorized use. Although the data, software, and related material have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: readme.txt
Format Version Number: 1.0
Format Specification: ASCII text file
Format Information Content: This ASCII text file describes the model data release including the archive folder structure and files contained within each subfolder. This file also includes instructions on how to run the models contained in this data release.
Transfer Size: 0.045
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: https://water.usgs.gov/GIS/dsdl/gwmodels/sir2019-5102/readme.txt
Digital Form:
Digital Transfer Information:
Format Name: modelgeoref.txt
Format Version Number: 1.0
Format Specification: ASCII text file
Format Information Content: This ASCII text file defines the four corners of the model domain. Model coordinates are in decimal degrees.
Transfer Size: 0.001
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: https://water.usgs.gov/GIS/dsdl/gwmodels/sir2019-5102/modelgeoref.txt
Digital Form:
Digital Transfer Information:
Format Name: ancillary.zip
Format Version Number: 1.0
Format Specification: ZIP
Format Information Content: This ZIP file contains the model template and control files used for the model calibration with PEST++ as documented in the report.
Transfer Size: 11.5819997787476
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: https://water.usgs.gov/GIS/dsdl/gwmodels/sir2019-5102/ancillary.zip
Digital Form:
Digital Transfer Information:
Format Name: bin.zip
Format Version Number: 1.0
Format Specification: ZIP file
Format Information Content: ZIP file containing the MODFLOW-2005 (version 1.12.00), SEAWAT (version 4.0), and PEST ++ 64-bit executables used to run the simulations documented in the report.
Transfer Size: 2.71
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: https://water.usgs.gov/GIS/dsdl/gwmodels/sir2019-5102/bin.zip
Digital Form:
Digital Transfer Information:
Format Name: georef.zip
Format Version Number: 1.0
Format Specification: ZIP file
Format Information Content: ZIP file containing a shapefile which defines the extent of the model domain and active and inactive portions of the model.
Transfer Size: 0.024
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: https://water.usgs.gov/GIS/dsdl/gwmodels/sir2019-5102/georef.zip
Digital Form:
Digital Transfer Information:
Format Name: model.zip
Format Version Number: 1.0
Format Specification: ZIP file
Format Information Content: This ZIP file contains the input files for the MODFLOW-2005 and SEAWAT simulations documented in the report.
Transfer Size: 66.457
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: https://water.usgs.gov/GIS/dsdl/gwmodels/sir2019-5102/model.zip
Digital Form:
Digital Transfer Information:
Format Name: output.zip
Format Version Number: 1.0
Format Specification: ZIP file
Format Information Content: This ZIP file contains the output files for the MODFLOW-2005 and SEAWAT simulations documented in the report.
Transfer Size: 310.071
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: https://water.usgs.gov/GIS/dsdl/gwmodels/sir2019-5102/output.zip
Digital Form:
Digital Transfer Information:
Format Name: source.zip
Format Version Number: 1.0
Format Specification: ZIP file
Format Information Content: ZIP file containing source files for MODFLOW-2005 (version 1.12.00), SEAWAT (version 4.0), and PEST ++ used to run the simulations documented in the report.
Transfer Size: 14.52
Digital Transfer Option:
Online Option:
Computer Contact Information:
Network Address:
Network Resource Name: https://water.usgs.gov/GIS/dsdl/gwmodels/sir2019-5102/source.zip
Fees: None
Metadata Reference Information:
Metadata Date: 20190731
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: U.S. Geological Survey
Contact Position: Ask USGS -- Water Webserver Team
Contact Address:
Address Type: mailing
Address: 445 National Center
City: Reston
State or Province: VA
Postal Code: 20192
Contact Voice Telephone: 1-888-275-8747 (1-888-ASK-USGS)
Contact Electronic Mail Address: https://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+sir2019_5102
Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998