MT3D-USGS version 1: A U.S. Geological Survey release of MT3DMS updated with new and expanded transport capabilities for use with MODFLOW

Bedekar, Vivek; Morway, Eric D.; Langevin, Christian D.; Tonkin, Matthew

doi:10.3133/tm6a53

Cited by 100 publications

(95 citation statements)

References 13 publications

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“…• MODFLOW-2005 [26] for simulating groundwater flow in porous media, including ground-and surface-water interaction, vertical flow through the unsaturated zone, and seawater intrusion by adopting a 3D vertically integrated variable-density approach; • MODFLOW-OWHM (One-Water Hydrologic Flow Model) [27], including the Farm Process (FMP) package to deal with conjunctive use of ground-and surface-water for water management issues; • the Crop Growth Model based on the EPIC (Environmental Policy Integrated Climate) and APEX (Agricultural Policy / Environmental eXtender) family of models [28,29] to simulate crop yield at harvest as a function of the above-ground biomass; • MODPATH [30] for particle tracking based on a purely advective transport process; • ZONE BUDGET [31] to estimate the groundwater budget for model sub-regions; • MT3DMS (Modular Three-Dimensional Multispecies Transport Model for Simulation of Advection, Dispersion, and Chemical Reactions of Contaminants in Groundwater Systems) [32] for simulating multi-species advective-dispersive transport in the saturated zone; • MT3D-USGS [33], the most updated version of MT3DMS with new transport modelling capabilities, including simulation of solute transport in the unsaturated zone and mass exchange with surface water bodies;…”

Section: Demonstration Of Freewat Application At Selected Case Studiesmentioning

confidence: 99%

Spatial Data Management and Numerical Modelling: Demonstrating the Application of the QGIS-Integrated FREEWAT Platform at 13 Case Studies for Tackling Groundwater Resource Management

Filippis

Pouliaris

Kahuda

et al. 2019

Water

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Because of the spatial nature of groundwater-related data and their time component, effective groundwater management requires the application of methods pertaining to the Information and Communication Technologies sector, such as spatial data management and distributed numerical modelling. The objective of this paper is to demonstrate the effectiveness of the QGIS-integrated FREEWAT platform and an approach combining spatial data management and numerical models to target groundwater management issues. FREEWAT is a free and open source platform integrated in a Geographic Information System environment and embedding tools for pre-and post-processing of Water 2020, 12, 41 2 of 31 spatial data and integrating numerical codes for the simulation of the hydrological cycle, with a main focus on groundwater. To this aim, this paper briefly presents the FREEWAT platform, introduces the FREEWAT approach, and showcases 13 case studies in European and non-European countries where the FREEWAT platform was applied. Application of the FREEWAT platform to real-world case studies is presented for targeting management of coastal aquifers, ground-and surface-water interaction, climate change impacts, management of transboundary aquifers, rural water management and protection of groundwater-dependent ecosystems. In this sense, compared to other existing software suites, FREEWAT allows data analysis and visualization to accomplish each step of the modelling workflow, i.e., from data analytics, to conceptual model definition, to numerical modelling and reporting of results. The presented experiences demonstrate that improved access to data and the portability of models and models' results can help to promote water sustainability from the localto the basin-scale. Furthermore, FREEWAT may represent a valuable tool to target the objective of increasing the capabilities of public authorities and private companies to manage groundwater resources by means of up-to-date, robust, well-documented and reliable software, without entailing the need of costly licensing, nowadays seldom affordable by public water authorities. Based on the strengths highlighted, the FREEWAT platform is a powerful tool for groundwater resources management, and for data collection, sharing, implementation and comparison of scenarios, for supporting planning and decision-making.

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Section: Demonstration Of Freewat Application At Selected Case Studiesmentioning

confidence: 99%

Spatial Data Management and Numerical Modelling: Demonstrating the Application of the QGIS-Integrated FREEWAT Platform at 13 Case Studies for Tackling Groundwater Resource Management

Filippis

Pouliaris

Kahuda

et al. 2019

Water

View full text Add to dashboard Cite

show abstract

“…A 2-D model geometry was selected over a full 3-D model for the sake of higher computational efficiency while not significantly compromising the general findings as per previous studies (D'Affonseca et al, 2011;Ekwurzel et al, 1994;Ma et al, 2014;Salmon et al, 2015;Solomon & Sudicky, 1991;Zhang et al, 2013). Groundwater flow was simulated with MODFLOW-NWT (Niswonger et al, 2011) and multispecies environmental tracer transport simulations were performed with MT3DMS-USGS (v1; Bedekar et al, 2016). The conceptual hydrogeological model was defined to resemble a semiarid groundwater system.…”

Section: Numerical Modeling Framework 231 Numerical Model Setupmentioning

confidence: 99%

Physical and Chemical Controls on the Simultaneous Occurrence of Young and Old Groundwater Inferred From Multiple Age Tracers

Underwood

McCallum

Cook

et al. 2018

Water Resources Research

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Understanding groundwater ages within an aquifer system has the potential to better constrain estimates of groundwater recharge and flow rates and therefore increase the reliability of groundwater models. Groundwater ages are generally interpreted from field‐observed environmental tracer concentrations, but in many cases in which multiple groundwater age tracers have been analyzed simultaneously the results show significant disparities among tracer‐specific estimated ages. The disparities are generally attributed to physical mixing between waters of different ages. However, especially in the geochemical literature environmental tracer concentrations are often analyzed with simplistic models in which the degree of the simulated mixing might be considered unrealistic for natural heterogeneous geologic media. In this study we use numerical experiments to examine under which physical conditions measured concentrations of selected environmental tracers (CFC‐12, 39Ar, and 14C) may return discrepant ages. Our model simulations suggest that matrix diffusion has the greatest potential to cause mixing of different‐aged water and to generate age biases between tracers. The multitracer simulations also suggest that there is a limit to the magnitude of the discrepancies that can be attributed to physical processes. When comparing data collected from the Pilbara region of Western Australia with our numerical modeling studies, it was found that a dual‐domain mass transfer model was required to explain the field‐observed age discrepancies.

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“…However, monitoring groundwater is inherently difficult due to physical barriers between observers and the water. Through the understanding of subsurface flow physics and with flow and contaminant transport models such as MODFLOW, MODPATH and MT3D [77][78][79], we can simulate the behaviour of groundwater. Unfortunately, our simulations are not always accurate, and the models require real-world observations to be calibrated and validated.…”

Section: Soil Moisture and Groundwater Networkmentioning

confidence: 99%

Entropy Applications to Water Monitoring Network Design: A Review

Keum

Kornelsen

Leach

et al. 2017

Entropy

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Abstract:Having reliable water monitoring networks is an essential component of water resources and environmental management. A standardized process for the design of water monitoring networks does not exist with the exception of the World Meteorological Organization (WMO) general guidelines about the minimum network density. While one of the major challenges in the design of optimal hydrometric networks has been establishing design objectives, information theory has been successfully adopted to network design problems by providing measures of the information content that can be deliverable from a station or a network. This review firstly summarizes the common entropy terms that have been used in water monitoring network designs. Then, this paper deals with the recent applications of the entropy concept for water monitoring network designs, which are categorized into (1) precipitation; (2) streamflow and water level; (3) water quality; and (4) soil moisture and groundwater networks. The integrated design method for multivariate monitoring networks is also covered. Despite several issues, entropy theory has been well suited to water monitoring network design. However, further work is still required to provide design standards and guidelines for operational use.

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MT3D-USGS version 1: A U.S. Geological Survey release of MT3DMS updated with new and expanded transport capabilities for use with MODFLOW

Cited by 100 publications

References 13 publications

Spatial Data Management and Numerical Modelling: Demonstrating the Application of the QGIS-Integrated FREEWAT Platform at 13 Case Studies for Tackling Groundwater Resource Management

Spatial Data Management and Numerical Modelling: Demonstrating the Application of the QGIS-Integrated FREEWAT Platform at 13 Case Studies for Tackling Groundwater Resource Management

Physical and Chemical Controls on the Simultaneous Occurrence of Young and Old Groundwater Inferred From Multiple Age Tracers

Entropy Applications to Water Monitoring Network Design: A Review

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