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


Metadata
File Identifier:
Metadata Language: eng; USA
: utf8
Resource Type: Dataset
Responsible Party:
Organisation Name: U.S. Geological Survey
Position Name: Ask USGS -- Water Webserver Team
Role: Point Of Contact
Contact Info:
Voice: 1-888-275-8747 (1-888-ASK-USGS)
Delivery Point: 445 National Center
City: Reston
Administrative Area: VA
Postal Code: 20192
E-Mail Address: https://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+sir2019_5102
Metadata Date: 2019-07-31
Metadata Standard Name: ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
Metadata Standard Version: ISO 19115-2:2009(E)
Data Identification
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)
Language: eng; USA
Thumbnail:
Browse Graphic: https://water.usgs.gov/GIS/browse/sir2019-5102Thumbnail.jpg
Browse Graphic Type: jpg
Browse Graphic Caption: Image of the model domain and active area of the model.
Citation:
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
Date:
Date: 2019-01-01
Date Type: Publication Date
Organisation Name: U.S. Geological Survey
Role: Publisher
Contact Info:
City: Reston
Administrative Area: VA, USA
Organisation Name: Charles E. Heywood
Role: Originator
Organisation Name: Charles E. Heywood
Role: Originator
Organisation Name: Maxwell A. Lindaman
Role: Originator
Organisation Name: John K. Lovelace
Role: Originator
Organisation Name:
Role:
Contact Info:
Online Resource: https://doi.org/10.5066/P9URJ38Q
Point Of Contact:
Individual Name: John K Lovelace
Organisation Name: Southeast Region
Position Name: Supervisory Hydrologist
Role: Point Of Contact
Contact Info:
Voice: 225-298-5481 x3210
Delivery Point: 3535 S Sherwood Forest
City: Baton Rouge
Administrative Area: LA
Postal Code: 70816
Country: United States
E-Mail Address: jlovelac@usgs.gov
Representation Type: Grid
Topic Category: Geological and Geophysical
Keyword Collection:
Keyword: usgsgroundwatermodel
Keyword: MODFLOW-2005
Keyword: Groundwater
Keyword: InlandWaters
Keyword: Groundwater Model
Keyword: SEAWAT
Keyword: Transport Model
Keyword: salinity
Keyword: water use
Keyword: water budget
Keyword: hydrogeology
Associated Thesaurus: USGS Thesaurus
Keyword: Baton Rouge
Keyword: Louisiana
Keyword: East Baton Rouge Parish
Keyword: West Baton Rouge Parish
Keyword: Pointe Coupee Parish
Keyword: West Feliciana Parish
Keyword: East Feliciana Parish
Keyword: Livingston Parish
Keyword: Ascension Parish
Keyword: Avoyelles Parish
Keyword: Concordia Parish
Keyword: Iberville Parish
Keyword: St. Helena Parish
Keyword: St. Landry Parish
Keyword: Tangipahoa Parish
Keyword: St. Martin Parish
Associated Thesaurus: Geographic Names Information Systems
Spatial Extent:
West Bounding Longitude: -91.915925
East Bounding Longitude: -90.447555
North Bounding Latitude: 31.337561
South Bounding Latitude: 30.242934
Constraints: 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.
Legal Constraints:
Use Constraints: Other Restrictions
Other Constraints: Use Constraints: none
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Access Constraints: Other Restrictions
Other Constraints: Access Constraints: None. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from this data release.
Security Constraints:
Classification: unclassified
Classification System: None
Handling Description: None
Distribution
Distribution Format:
Format Name: readme.txt
Format Version: 1.0
Specification: ASCII text file
Distribution Format:
Format Name: modelgeoref.txt
Format Version: 1.0
Specification: ASCII text file
Distribution Format:
Format Name: ancillary.zip
Format Version: 1.0
Specification: ZIP
Distribution Format:
Format Name: bin.zip
Format Version: 1.0
Specification: ZIP file
Distribution Format:
Format Name: georef.zip
Format Version: 1.0
Specification: ZIP file
Distribution Format:
Format Name: model.zip
Format Version: 1.0
Specification: ZIP file
Distribution Format:
Format Name: output.zip
Format Version: 1.0
Specification: ZIP file
Distribution Format:
Format Name: source.zip
Format Version: 1.0
Specification: ZIP file
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URL: https://water.usgs.gov/GIS/dsdl/gwmodels/sir2019-5102/readme.txt
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URL: https://water.usgs.gov/GIS/dsdl/gwmodels/sir2019-5102/model.zip
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URL: https://water.usgs.gov/GIS/dsdl/gwmodels/sir2019-5102/output.zip
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URL: https://water.usgs.gov/GIS/dsdl/gwmodels/sir2019-5102/source.zip
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Distributor:
Distributor Contact:
Individual Name: Ask USGS -- Water Webserver Team
Organisation Name: U.S. Geological Survey
Role: Distributor
Contact Info:
Voice: 1-888-275-8747 (1-888-ASK-USGS)
Delivery Point: 445 National Center
City: Reston
Administrative Area: Virginia
Postal Code: 20192
Country: USA
E-Mail Address: https://water.usgs.gov/user_feedback_form.html
Quality
Scope: Dataset