Request for Tutorial guidance for QSWATMOD2

[Bersisa Tola]

Greetings dear all SWATMOD User.

I'm writing this regarding predation of input data for SWATMOD. I'm PhD student and I'm going to select my PhD dissertation on Evaluation of Groundwater sustainability and water partitioning in Drylands using SWAT-MODFLOW. So, can any one guide me the data predation, format and model setup? 

Thanks and Regards!!!

---------------
Barsisa Tola Lemesa (MSc)
Email: bersis...@gmail.com
Senior Lecturer of Hydrogeology
(Department of Geology, Salale University)
Fiche, P.O. 245, Oromia, Ethiopia
Research gate: https://www.researchgate.net/profile/Barsisa-Tola-Lemesa

[VIKAS SINGH]

Dear Tola,

If you have not setup your SWAT model set up it first. Install QSWATMOD2 in your system and enable the plugin in your QGIS LTR. And then you can start with QSWATMOD. there is option for generating the MODFLOW model in the QSWATMOD itself. you have to provide the aquifer properties and grid size.

Regards

Vikas Singh

PhD Scholar

IIT Bombay

--
You received this message because you are subscribed to the Google Groups "SWAT-MODFLOW" group.
To unsubscribe from this group and stop receiving emails from it, send an email to swat-modflow...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/swat-modflow/CAO%3DEBMToCm6d1CNxW7HHq0B1%3DRWJ-t--GjUvHLsGj%3D7BbBA%2BLA%40mail.gmail.com.

--

Thanks & Regards

Vikas Singh

PhD Scholar

Center for Climate Studies

IIT Bombay

PG 

Department of Civil Engineering

IIT Ropar

UG

NIT Andhra Pradesh

Contact:- 9643181374/6305982924

Email:-vksc...@gmail.com

Please consider the environment before printing this e-mail.

CONFIDENTIALITY NOTICE: The contents of this email message and any attachments are intended solely for the addressee(s) and may contain confidential and/or privileged information and may be legally protected from disclosure. If you are not the intended recipient of this message or their agent, or if this message has been addressed to you in error, please immediately alert the sender by reply email and then delete this message and any attachments. If you are not the intended recipient, you are hereby notified that any use, dissemination, copying, or storage of this message or its attachments is strictly prohibited.

[Bersisa Tola]

Dear Vikas Singh
Thank you very much for your direction. Here what I need clarification is that before I apply QSWATMOD, I have to setup and calibrate SWAT model separately then I come back to the QSWATMOD?.

Thanks and Regards!!!

---------------
Barsisa Tola Lemesa (MSc)
Email: bersis...@gmail.com
Senior Lecturer of Hydrogeology
(Department of Geology, Salale University)
Fiche, P.O. 245, Oromia, Ethiopia
Research gate: https://www.researchgate.net/profile/Barsisa-Tola-Lemesa

[VIKAS SINGH]

Yes you calibrate and setup the model and then start providing all the SWAT files to the QSWATMOD. Also see the following paper by Parl et al., 2019.

https://doi.org/10.1016/j.envsoft.2018.10.017

[Seonggyu Park]

Thanks for the comment, Vikas. You might also find the QSWATMOD tutorial at the following link https://github.com/spark-brc/QSWATMOD2-plugin/blob/main/docs/QSWATMOD_tutorial.pdf.

Regarding calibration, the results from a standalone SWAT model calibration can provide reasonable initial parameter values for an integrated SWAT-MODFLOW model. However, please note that groundwater parameters (values in the *.gw files) in SWAT will be deactivated when using the SWAT-MODFLOW model. As a result, you may need to recalibrate the SWAT-MODFLOW model after linking the two models to ensure accuracy.

Best,

Seonggyu

[Bersisa Tola]

Dear Seonggyu,
Thank you so much for your help. Additionally I have a question in case of application and calibration the SWAT model, i.e my study area is arid to semi-arid environment: so
1. Is the SWAT model applicable for this environment?
2. There are stream flow data limitations, how can I calibrate the model?

Thanks and Regards!!!

---------------
Barsisa Tola Lemesa (MSc)
Email: bersis...@gmail.com
Senior Lecturer of Hydrogeology
(Department of Geology, Salale University)
Fiche, P.O. 245, Oromia, Ethiopia
Research gate: https://www.researchgate.net/profile/Barsisa-Tola-Lemesa

To view this discussion visit https://groups.google.com/d/msgid/swat-modflow/c63c9426-7a3b-44be-a02a-562f8710e6aan%40googlegroups.com.

[Rayen Rivera]

Hello everyone,

I am also a PhD student working on a coupled  SWAT-MODFLOW model for a watershed in Central Chile. I have calibrated my SWAT model using SWAT-CUP premium. I have 3 questions:

1) Should I use the SWAT-CUP output files as inputs for the QSWATMOD? (i.e. mymodel.Spe.Swatcup?)

2) I have started setting my MODFLOW model in ModelMuse, but the groundwater modeling area is smaller (as shown in the picture), is that a problem when using QSWATMOD? I assume the coupled model should have the size of the smaller area, in this case my MODFLOW area. Does it work like that?

3) I have a main river that in some parts is wider than 1km, but my MODFLOW grid size is 250x250. Would it still be correct to use the SWAT river shapefile as the MODFLOW River package? 

Thank you very much for your help,

Rayén Rivera-Vidal

Geóloga UdeC

PhD(c) en Ciencias Ambientales con mención en Sistemas Acuáticos Continentales

Facultad de Ciencias Ambientales – Centro EULA

Universidad de Concepción - Chile

Registro Orcid orcid.org/0000-0001-7327-6372

[Seonggyu Park]

Choosing a model for your study area largely depends on the scope of your research and what you aim to achieve with your modeling practices.

1. Is the SWAT model applicable for this environment?

 -> Yes, the SWAT model has been widely applied to arid and semi-arid environments, as demonstrated in numerous research studies and publications. You may find this review paper on SWAT applications helpful: https://doi.org/10.1016/j.jhydrol.2020.125418.

2.  There are stream flow data limitations, how can I calibrate the model?

 -> When streamflow data is limited, alternative datasets can be utilized for calibration. Many recent studies use satellite-derived ET data, crop yield observations, sediment yield, or groundwater level measurements (especially when using a SWAT-MODFLOW model).

Best,

Seonggyu

[Seonggyu Park]

Dear Rayén Rivera-Vidal,

Thank you for your questions. Here are my responses:

1) Should I use the SWAT-CUP output files as inputs for the QSWATMOD? (i.e. mymodel.Spe.Swatcup?)

-> QSWATMOD does not utilize output files from SWAT-CUP.

2) I have started setting my MODFLOW model in ModelMuse, but the groundwater modeling area is smaller (as shown in the picture), is that a problem when using QSWATMOD? I assume the coupled model should have the size of the smaller area, in this case my MODFLOW area. Does it work like that?

-> Having a smaller MODFLOW extent is fine. However, note that SW-GW interactions and groundwater processes will only occur in the areas where SWAT and MODFLOW overlap. In regions covered solely by SWAT, only surface processes will take place.

3) I have a main river that in some parts is wider than 1km, but my MODFLOW grid size is 250x250. Would it still be correct to use the SWAT river shapefile as the MODFLOW River package? 

Yes. it is right. For the main river with the wider than 1 km width, you can adjust MODFLOW riverbed conductance. For this part. When you use QSWATMOD, QSWATMOD will estimate riverbed conductance based on the river width and length  in a grid reading them from the river shapefile.

-> Yes, it is correct to use the SWAT river shapefile for the MODFLOW River package. For main rivers wider than 1 km, you can adjust the riverbed conductance in MODFLOW. QSWATMOD estimates riverbed conductance based on river width and length within each grid cell, using information from the river shapefile.

Best,

Seonggyu