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  • MODFLOW-NWT, MODPATH, and MT3DMS models used to study of hypothetical horizontal water-supply well design for New Hampshire and surrounding regions: U.S. Geological Survey data release

    Metadata Updated: March 22, 2021

    A series of three-dimensional, hypothetical, groundwater models (MODFLOW-NWT) were developed to investigate the effects of a variety of factors on the flow of arsenic-containing water into a well. The well is of novel design with a constructed aquifer providing storage. The models simulate a hillslope with till overlying a fractured bedrock aquifer as is common in New England. Backwards particle tracking using MODPATH was used to track the particles from the constructed aquifer to the recharge location. A new program, EndPoint Analyzer, was used to determine the fraction of the flow that passed through the bedrock. The bedrock is assumed to be the source of arsenic contamination so the fraction of the flow passing through bedrock could be used to assess the potential for arsenic contamination. MT3DMS simulations were used for comparison purposes. This USGS data release contains all of the input and output files for the simulations described in the associated model journal article (Winston and Ayotte, 2017). This data release also includes (1) MODFLOW-NWT (v 1.1.2) source code, (2) MODPATH version (v. 6.0) source code, (3) MT3DMS (v 5.3) source code, and (4) Endpoint Analyzer source code.

    Access & Use Information

    License: No license information was provided.

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    Dates

    Metadata Date November 17, 2020
    Metadata Created Date March 22, 2021
    Metadata Updated Date March 22, 2021
    Reference Date(s) January 1, 2017 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from USGS-Harvest

    Graphic Preview

    Image of the model domains and active areas of the models. The model consists of a rectangular domain with an extraction well in the center of the model and a specified head boundary at the southern end of the model. Recharge is applied to the entire upper surface.

    Additional Metadata

    Resource Type Dataset
    Metadata Date November 17, 2020
    Metadata Created Date March 22, 2021
    Metadata Updated Date March 22, 2021
    Reference Date(s) January 1, 2017 (publication)
    Responsible Party National Research Program, US Geological Survey (Point of Contact)
    Contact Email
    Guid
    Access Constraints Use Constraints: The data model are released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use., Access Constraints: none
    Bbox East Long -66
    Bbox North Lat 47
    Bbox South Lat 41
    Bbox West Long -73
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Image of the model domains and active areas of the models. The model consists of a rectangular domain with an extraction well in the center of the model and a specified head boundary at the southern end of the model. Recharge is applied to the entire upper surface.
    Graphic Preview File https://water.usgs.gov/GIS/browse/groundwater_2017_Winston_Thumbnail.png
    Graphic Preview Type png
    Licence The data and program (hereafter termed 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 on any other system, or for general or scientific purposes, 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.
    Metadata Language eng; USA
    Metadata Type geospatial
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2015-04-23
    Temporal Extent End 2017-02-24

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