7th International Conference "HYDRUS Software Applications to Subsurface
Flow and Contaminant Transport Problems, Prague, 2023
April 20-21, 2023.
Prague, Czech Republic
Organized by:Aims and Scope
The Conference "HYDRUS Software Applications to Subsurface Flow and Contaminant
Transport Problems" will focus on applications of advanced numerical models simulating
variably saturated flow, heat transport, and coupled reactive transport of various contaminants(nutrients, pollutants, pathogenic organisms) in soils and groundwater. Similarly, as the very
successful earlier workshops in this series (Utrecht in 2006, Tokyo in 2008, and Prague in 2008,2013, and 2017), the 7th conference will bring together world-leading and junior scientists andengineers from different branches of the soil, hydrologic, and environmental communities. At theconference, we will introduce a new Version 5 of HYDRUS resulting from merging HYDRUS1D with HYDRUS (2D/3D) and including new modules such as PFAS, Particle Tracking,Dynamic Plant Uptake, Cosmic, Furrow, and others.
The conference is not limited to applications involving HYDRUS and its modules. Applicationsof other numerical tools (e.g., Tough2, SWAP, MACRO) are also encouraged and welcomed.
We will introduce a new Version 5 of HYDRUS resulting from merging HYDRUS-1D with
HYDRUS (2D/3D), implementing the newly integrated form of coupling PHREEQC with
HYDRUS (HPx), and including new modules such as PFAS, Particle Tracking, Dynamic Plant
Uptake, Cosmic, etc.
Topics
1. Variably Saturated Water Flow
Modeling of various agricultural, hydrologic, and environmental problems at different
scales, including preferential/nonequilibrium flow.
2. Transport of Contaminants and Particle-Like Substances
Transport of pollutants, colloids, viruses, bacteria, and nanoparticles. Colloid-facilitatedsolute transport.

3. Biogeochemical Transport and Reactions
Applications of the HYDRUS modules HP1/2/3, UnsatChem, C-Ride, DualPerm, andWetlands, as well as other models with similar capabilities.
4. Heat Transport
Modeling the transport of energy, including vapor flow and issues related tofreezing/thawing.
5. Inverse Problems
Inverse modeling and parameter estimation using different optimization tools (e.g.,Marquardt, AMALGAM, DREAM).
Conference Conveners
Rien van Genuchten, Federal University of Rio de Janeiro, BrazilJirka Šimůnek, University of California Riverside, USARadka Kodešová, University of Life Sciences Prague, Czech Republic
Miroslav Šejna, PC-Progress, Prague, Czech Republic
Diederik Jacques, SCK CEN, Belgium
Günter Langergraber, BOKU, Vienna, Austria
Giuseppe Brunetti, BOKU, Vienna, Austria, University of Calabria, Italy
Local Organizing Committee
Radka Kodešová, University of Life Sciences Prague, Czech Republic
Miroslav Šejna, PC-Progress, Prague, Czech RepublicContact: Kodesova@af.czu.cz
Call for Abstracts
Authors are invited to submit a one-page abstract for oral or poster presentation by email (toJiri.Simunek@ucr.edu). Please underline the name of the presenting author, specify the topic,and indicate your preference for presentation (oral or poster). Authors will be notified of
acceptance of the reviewed abstract before March 31, 2023.
Deadline for abstract submission: March 15, 2023
Registration
1. Early registration (before March 15, 2023): 350 EUR (200 EUR when also registering forthe short course).
2. Late registration (after March 15 and before April 15, 2023): 400 EUR (250 EUR when
also registering for the short course).
3. Student early registration (before March 15, 2023): 200 EUR (100 EUR when alsoregistering for the short course).
4. Student late registration (after March 15 and before April 15, 2023): 250 EUR (200 EUR
when also registering for the short course).
The fee includes coffee breaks, lunches, a booklet of abstracts, and a social event. A
confirmation (including an invoice for the registration fee) will be sent to the participants. A
registration form will be available on January 15, 2023.

Program
The detailed conference program will be available on March 30, 2023
Accommodation
There are many hotels in downtown Prague, which is only about 30 minutes from the conference
venue by public transportation.
Accommodation close to the conference venue:- https://carlhotel.cz/en- https://www.kam.czu.cz/en/r-10601-guests-outside-the-czu
VISA
Please kindly note that you are responsible for ensuring that all entry requirements for the Czech
Republic are fulfilled. Please take all necessary steps to obtain a visa, if necessary. Organizers
cannot help you in obtaining a visa. Participants receive confirmation of the registration byemail, which can be used as part of the visa application package.
Venue
University of Life Sciences Prague, Czech RepublicCzech University of Life Sciences Prague
Faculty of Agrobiology, Food and Natural ResourcesKamýcká 129
165 00 Praha 6 – Suchdol
Czech Republic
http://www.af.czu.cz/en/