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Journal Article

Recent Developments and Applications of the HYDRUS Computer Software Packages

Jiří Šimůnek, Martinus Th. van Genuchten, Miroslav Šejna
Published: 01 July 2016
Vadose Zone Journal (2016) 15 (7): vzj2016.04.0033.
DOI: https://doi.org/10.2136/vzj2016.04.0033
...Jiří Šimůnek; Martinus Th. van Genuchten; Miroslav Šejna Abstract The HYDRUS-1D and HYDRUS (2D/3D) computer software packages are widely used finite-element models for simulating the one- and two- or three-dimensional movement of water, heat, and multiple solutes in variably saturated media...
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Journal Article

Reactive Transport Modeling of Subsurface Flow Constructed Wetlands Using the HYDRUS Wetland Module

Günter Langergraber, Jirka Šimůnek
Published: 01 May 2012
Vadose Zone Journal (2012) 11 (2): vzj2011.0104.
DOI: https://doi.org/10.2136/vzj2011.0104
... are either in an early stage of development or are available only in-house. The HYDRUS wetland module is the only implementation of a CW model that is currently publicly available. Version 2 of the HYDRUS wetland module includes two biokinetic model formulations simulating reactive transport in CWs: CW2D...
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View PDF for article title, Reactive Transport Modeling of Subsurface Flow Constructed Wetlands Using the <span class="search-highlight">HYDRUS</span> Wetland Module
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Journal Article

Applying HYDRUS to Flow in a Sodic Clay Soil with Solution Composition–Dependent Hydraulic Conductivity

Lucy P. Reading, Thomas Baumgartl, Keith L. Bristow, David A. Lockington
Published: 01 May 2012
Vadose Zone Journal (2012) 11 (2): vzj2011.0137.
DOI: https://doi.org/10.2136/vzj2011.0137
... in these sodic soils requires a model that can adequately represent the physical and chemical changes in the soil associated with the amelioration process. While there are a number of models that simulate reactive solute transport, UNSATCHEM and HYDRUS-1D are currently the only models that also include...
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View PDF for article title, Applying <span class="search-highlight">HYDRUS</span> to Flow in a Sodic Clay Soil with Solution Composition–Dependent Hydraulic Conductivity
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Journal Article

Soil Physics with HYDRUS: Modeling and Applications

John Selker, Ryan Stewart
Published: 01 November 2011
Vadose Zone Journal (2011) 10 (4): 1338–1339.
DOI: https://doi.org/10.2136/vzj2011.0085br
... equations of water retention and flow in soils permit few student-accessible analytical solutions, while numerical solutions can solve problems that students recognize as being important and interesting. On this basis, the powerful and user-friendly modeling framework provided by the well-known HYDRUS...
View PDF for article title, Soil Physics with <span class="search-highlight">HYDRUS</span>: Modeling and Applications
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Journal Article

Sensitivity Analysis of Transient-MIM HYDRUS-1D: Case Study Related to Pesticide Fate in Soils All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.

Bruno Cheviron, Yves Coquet
Published: 01 November 2009
Vadose Zone Journal (2009) 8 (4): 1064–1079.
DOI: https://doi.org/10.2136/vzj2009.0023
...Bruno Cheviron; Yves Coquet Abstract A sensitivity analysis of the HYDRUS-1D model was performed based on scenarios that represented the fate of a nonvolatile pesticide in three soils. We used the latest dual-porosity, transient mobile–immobile (MIM) version of HYDRUS-1D that includes water...
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View PDF for article title, Sensitivity Analysis of Transient-MIM <span class="search-highlight">HYDRUS</span>-1D: Case Study Related to Pesticide Fate in Soils All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.
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Journal Article

Comment on “Evaluating Interactions between Groundwater and Vadose Zone Using the HYDRUS-Based Flow Package for MODFLOW” by Navin Kumar C. Twarakavi, Jirka Šimůnek, and Sophia Seo All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.

R. G. Niswonger, D. E. Prudic
Published: 01 August 2009
Vadose Zone Journal (2009) 8 (3): 818–819.
DOI: https://doi.org/10.2136/vzj2008.0155
.... Shallow groundwater can result in groundwater discharge at the surface in UZF1, and this condition is handled as a head-dependent discharge out of the groundwater system. HYDRUS solves the one-dimensional Richards equation using finite elements and is coupled to MODFLOW similar to UZF1 when the water...
View PDF for article title, Comment on “Evaluating Interactions between Groundwater and Vadose Zone Using the <span class="search-highlight">HYDRUS</span>-Based Flow Package for MODFLOW” by Navin Kumar C. Twarakavi, Jirka Šimůnek, and Sophia Seo All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.
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Add to Citation Manager for Comment on “Evaluating Interactions between Groundwater and Vadose Zone Using the <span class="search-highlight">HYDRUS</span>-Based Flow Package for MODFLOW” by Navin Kumar C. Twarakavi, Jirka Šimůnek, and Sophia Seo All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.
Journal Article

Reply to “Comment on ‘Evaluating Interactions between Groundwater and Vadose Zone Using the HYDRUS-based Flow Package for MODFLOW’” by Navin Kumar C. Twarakavi, Jirka Šimůnek, and Sophia Seo All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.

Navin Kumar C. Twarakavi, Jirka Šimůnek, Sophia Seo
Published: 01 August 2009
Vadose Zone Journal (2009) 8 (3): 820–821.
DOI: https://doi.org/10.2136/vzj2008.0004L
...Navin Kumar C. Twarakavi; Jirka Šimůnek; Sophia Seo * Corresponding author ( [email protected] ). Soil Science Society of America 2009 N iswonger and P rudic (2009) commented on the comparison of the UZF1 ( Niswonger et al., 2006 ) and HYDRUS ( Seo et al., 2007 ) packages...
View PDF for article title, Reply to “Comment on ‘Evaluating Interactions between Groundwater and Vadose Zone Using the <span class="search-highlight">HYDRUS</span>-based Flow Package for MODFLOW’” by Navin Kumar C. Twarakavi, Jirka Šimůnek, and Sophia Seo All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.
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Add to Citation Manager for Reply to “Comment on ‘Evaluating Interactions between Groundwater and Vadose Zone Using the <span class="search-highlight">HYDRUS</span>-based Flow Package for MODFLOW’” by Navin Kumar C. Twarakavi, Jirka Šimůnek, and Sophia Seo All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.
Journal Article

Numerical Simulation of Flow Dynamics during Macropore–Subsurface Drain Interactions Using HYDRUS All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.

Onur Akay, Garey A. Fox, Jirka Šimůnek
Published: 01 August 2008
Vadose Zone Journal (2008) 7 (3): 909–918.
DOI: https://doi.org/10.2136/vzj2007.0148
... chemicals to receiving waters as they bypass the bulk of the soil matrix. In this study, a numerical model (HYDRUS) that solves the three-dimensional Richards equation for both matrix and macropore domains was used to analyze previously conducted experiments that contained a single, surface-connected...
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View PDF for article title, Numerical Simulation of Flow Dynamics during Macropore–Subsurface Drain Interactions Using <span class="search-highlight">HYDRUS</span> All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.
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Journal Article

Development and Applications of the HYDRUS and STANMOD Software Packages and Related Codes All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.

Jirí Šimůnek, Martinus Th. van Genuchten, Miroslav Šejna
Published: 01 May 2008
Vadose Zone Journal (2008) 7 (2): 587–600.
DOI: https://doi.org/10.2136/vzj2007.0077
...Jirí Šimůnek; Martinus Th. van Genuchten; Miroslav Šejna Abstract Mathematical models have become indispensable tools for studying vadose zone flow and transport processes. We reviewed the history of development, the main processes involved, and selected applications of HYDRUS and related...
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View PDF for article title, Development and Applications of the <span class="search-highlight">HYDRUS</span> and STANMOD Software Packages and Related Codes All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.
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Add to Citation Manager for Development and Applications of the <span class="search-highlight">HYDRUS</span> and STANMOD Software Packages and Related Codes All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.
Journal Article

Evaluating Interactions between Groundwater and Vadose Zone Using the HYDRUS-Based Flow Package for MODFLOW All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.

Navin Kumar C. Twarakavi, Jirka Šimůnek, Sophia Seo
Published: 01 May 2008
Vadose Zone Journal (2008) 7 (2): 757–768.
DOI: https://doi.org/10.2136/vzj2007.0082
...Navin Kumar C. Twarakavi; Jirka Šimůnek; Sophia Seo Abstract In the past, vadose zone processes in groundwater flow models were dramatically simplified (or even neglected) due to constraints on computational resources. The one-dimensional unsaturated flow package HYDRUS, recently developed...
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View PDF for article title, Evaluating Interactions between Groundwater and Vadose Zone Using the <span class="search-highlight">HYDRUS</span>-Based Flow Package for MODFLOW All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.
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Journal Article

Modeling Nonequilibrium Flow and Transport Processes Using HYDRUS All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.

Jirka Šimůnek, Martinus Th. van Genuchten
Published: 01 May 2008
Vadose Zone Journal (2008) 7 (2): 782–797.
DOI: https://doi.org/10.2136/vzj2007.0074
... available within the latest version of the HYDRUS-1D software package. The formulations range from classical models simulating uniform flow and transport, to relatively traditional mobile-immobile water physical and two-site chemical nonequilibrium models, to more complex dual-permeability models...
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View PDF for article title, Modeling Nonequilibrium Flow and Transport Processes Using <span class="search-highlight">HYDRUS</span> All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any information storage and retrieval system, without permission in writing from the publisher.
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Journal Article

Comparison of Pesticide Transport Processes in Three Tile-Drained Field Soils Using HYDRUS-2D

Arnaud Boivin, Jirka Šimůnek, Michel Schiavon, Martinus Th. van Genuchten
Published: 01 August 2006
Vadose Zone Journal (2006) 5 (3): 838–849.
DOI: https://doi.org/10.2136/vzj2005.0089
... with the HYDRUS-2D variably saturated flow and solute transport model compared well with the observed data for the relatively homogeneous sandy loam (Villey) and the silt loam (Bouzule-1) soils. The saturated hydraulic conductivity of the bottom layer in both cases was key to correctly predicting the drainage...
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View PDF for article title, Comparison of Pesticide Transport Processes in Three Tile-Drained Field Soils Using <span class="search-highlight">HYDRUS</span>-2D
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Journal Article

Modelling Variably Saturated Flow with HYDRUS-2D.

John Selker
Published: 01 May 2004
Vadose Zone Journal (2004) 3 (2): 725.
DOI: https://doi.org/10.2113/3.2.725
... responsible for the lack of stable codes to solve unsaturated flow problems and having studied macropore and fingered flow, I was skeptical of HYDRUS-2D when I met Dr. Simunek for the first time in the early 1990s. However, the stunningly accessible interface and the remarkable stability of the code quickly...
View PDF for article title, Modelling Variably Saturated Flow with <span class="search-highlight">HYDRUS</span>-2D.
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Image
Simulations for the slanted lens. Inflow is from a series of nodes in the upper right (see Fig. 8), and outflow is from a series of nodes on the left: (a–c) simulation using the Hydrus sand and the Hydrus silt. Total time of simulation is (a) 8 yr, (b) 24 yr, and (c) 80 yr. (d) Simulation using Hydrus loamy sand and the Hydrus silt. Total time of simulation at the point of the image is 160 yr. The overall dimension of the simulation is 10 by 2 m.

Simulations for the slanted lens. Inflow is from a series of nodes in the u...

Published: 01 February 2011
Fig. 10. Simulations for the slanted lens. Inflow is from a series of nodes in the upper right (see Fig. 8 ), and outflow is from a series of nodes on the left: (a–c) simulation using the Hydrus sand and the Hydrus silt. Total time of simulation is (a) 8 yr, (b) 24 yr, and (c) 80 yr. (d
Image
A discretized aquifer system in MODFLOW and two associated HYDRUS soil profiles. One HYDRUS soil profile is assigned to each MODFLOW zone. Note that the discretization of HYDRUS soil profiles is much finer than that of the MODFLOW domain.

A discretized aquifer system in MODFLOW and two associated HYDRUS soil prof...

Published: 01 May 2008
F ig . 2. A discretized aquifer system in MODFLOW and two associated HYDRUS soil profiles. One HYDRUS soil profile is assigned to each MODFLOW zone. Note that the discretization of HYDRUS soil profiles is much finer than that of the MODFLOW domain.
Image
(a) Times series rainfall and ETp, (b) HYDRUS simulated moisture content along with observed data, (c and d) HYDRUS simulated matric potential along with observed data, (e) HYDRUS simulated soil drainage at 1 m depth, and (f) subsurface discharge at D1, D2, and D3 over the winter recharge season simulation period (01 Dec. 2009 to 15 Mar. 2010).

(a) Times series rainfall and ETp, (b) HYDRUS simulated moisture content al...

Published: 01 November 2012
Fig. 7. (a) Times series rainfall and ETp, (b) HYDRUS simulated moisture content along with observed data, (c and d) HYDRUS simulated matric potential along with observed data, (e) HYDRUS simulated soil drainage at 1 m depth, and (f) subsurface discharge at D1, D2, and D3 over the winter recharge
Image
Interpolated 2D HYDRUS model output for all scenarios, showing the parameters’ temporal mean, standard deviation, and range for the second year of the simulation period in VWC in vol%.

Interpolated 2D HYDRUS model output for all scenarios, showing the paramete...

Published: 16 January 2019
Figure 7. Interpolated 2D HYDRUS model output for all scenarios, showing the parameters’ temporal mean, standard deviation, and range for the second year of the simulation period in VWC in vol%.
Image
Schematic of the HYDRUS package for MODFLOW.

Schematic of the HYDRUS package for MODFLOW.

Published: 01 July 2016
Fig. 7. Schematic of the HYDRUS package for MODFLOW.
Image
Hydraulic properties of the four selected soils used in the HYDRUS-2D simulations, including saturated water content (θs), residual water content (θr), the lower limit at which plants stop extracting water (θl), and the critical pressure head hcrit.

Hydraulic properties of the four selected soils used in the HYDRUS-2D simul...

Published: 01 July 2015
Fig. 7. Hydraulic properties of the four selected soils used in the HYDRUS-2D simulations, including saturated water content (θ s ), residual water content (θ r ), the lower limit at which plants stop extracting water (θ l ), and the critical pressure head h crit .
Image
Fragment of domain used in HYDRUS-2D simulations for subsurface water retention technology (SWRT). Dashed line denotes atmospheric boundary conditions.

Fragment of domain used in HYDRUS-2D simulations for subsurface water reten...

Published: 01 July 2015
Fig. 3. Fragment of domain used in HYDRUS-2D simulations for subsurface water retention technology (SWRT). Dashed line denotes atmospheric boundary conditions.