I think , so far, HYDRUS-2D/3D is best for modeling points 1+2+3

Dear Satyanto,

DRAINMOD is a computer simulation model developed by Dr.Wayne Skaggs at the Department of Biological & Agricultural Engineering, North Carolina State University, Raleigh, NC in 1980. The model simulates the hydrology of poorly drained, high water table soils on an hour-by-hour, day-by-day basis for long periods of climatological record (e.g. 50 years). The model predicts the effects of drainage and associated water management practices on water table depths, the soil water regime and crop yields.  It has been used to analyze the hydrology of certain types of wetlands and to determine whether the wetland hydrologic criterion is satisfied for drained or partially drained sites. The model is also used to determine the hydraulic capacity of systems for land treatment of wastewater. The model has been successfully tested and applied in wide variety of geographical and soils conditions. In the last 20 years, the model's capability has been extended to predict the effects of drainage and water management practices on the hydrology and water quality of agricultural and forested lands both on field and watershed scale.

The latest version, DRAINMOD 6.0 , combines the original DRAINMOD hydrology model with DRAINMOD-N (nitrogen sub-model) and DRAINMOD-S (salinity sub-model) into a Windows based program. The new version includes a graphical user interface that allows easy preparation of input data sets, running simulations as well as displaying model outputs. In addition to organizing the hydrology, nitrogen, and salinity components of DRAINMOD, the interface facilitates analyses of the effect of drainage system design on subsurface drainage, surface runoff, SEW30, crop yield, and nitrogen loss in surface and subsurface drainage by automatically editing drainage design parameters (e.g. drain spacing & drain depth) over a specified range, simulating the different designs and graphically displaying the results. The interface also calculates the runoff volume from surrounding areas that drain to a site and adds that runoff volume to a DRAINMOD water balance of the site. Version 6.0 also includes routines for soil temperature modeling and considers freezing and thawing effects on drainage processes.

For modelling soil moisture, SWAT (Soil and Water Assessment Tool) is highly recommended

With my best regards

Prof Bachir ACHOUR

I know hydrus 1D already, but the 3D is far too expensive for my small projects. Drainmod is first time to hear, what is the basis model/equation that Drainmod uses? I use Modflow for open drainage case.

Dear Satyanto,

You can find everything you want on DRAINMOD by following the link below.

https://www.bae.ncsu.edu/soil_water/help_file/index.html 

With my best regards

Prof. Bachir ACHOUR

If you have sufficient data I think both Drainmod and Hydrus will be good tools.

Hi  Satyanto

You have received some good advice and while I am not sure of the cost for the various versions of HYDRUS I'm sure you will get a lot out of it. I encourage you to have a look at the recently published paper on advances in HYDRUS titled "Recent Developments and Applications of the HYDRUS Computer Software Packages". I have attached a copy for your use.

You are probably also familiar with the PC-Progress website but it is worth visiting to find out more about the problem you are wanting to simulate.

Good luck with your project.

Regards

KLB

The paper titled “Recent Developments and Applications of the HYDRUS Computer Software Packages” is very helpful (Thanks Keith). I encourage you to read it, and refer to  PC-Progress website, you may find more about  your problem,

Good luck

Thanx Keith, Hydrus is superior in my opinion... but not affordable to me (^_^).

 I am trying Model Muse now, it is basically Modflow with light GUI.

I wish I could do join research with you guys...

Satyanto K. Saptomo

Dear Dr. Satyanto, I used DRAINMOD in simulating the subsurface drainage system in agriculture lands. If you are interest, you can email me

[email protected]

Kind regards

We have Drainmod model to simulate and predict the water table fluctuation in daily basis. The input model is rainfall and soil water retention. I think when we have daily water table flctuation, we can also predict the soil moisture condition in the root zone. Another model like UPLOW could use to predict the moisture content as a function of water table level

Hydrus and Drainmod

Aside from assuming a unit gradient in Darcy's law, what other models can be used to model subsurface drainage in the field using a known hydraulic conductivity data?

OpenFOAm