International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage

Tools and Models

Using contemporary approaches and technology, for over seven decades, ICID has continuously taken initiatives to upgrade its ICT and related facilities to provide user-friendly access to the latest data, information, and knowledge products for the wider public. Some of the services that are being offered by the Central Office are briefly described here:

BHIWA: Basin-wide Holistic Integrated Water Management (BHIWA) Model is specially developed to provide an integrated computational framework for a basin level assessment of water resources with a view to evaluate water sector policies. The model considers the entire land phase of the hydrologic cycle and is capable of depicting human impacts such as changes in land and water use, as also impacts of water storage and depletion through withdrawals for various water uses and inter-basin water transfers. The model takes into consideration complex interaction between numerous factors including surface and groundwater, land use and natural water supply, storage and water withdrawals and returns, through separate water balances for surface and groundwater as well as an overall water balance. 

PODIUM: The International Water Management Institute, as part of the World Water Vision 2025, has developed PODIUM - the policy dialogue model in 1999. The model, an interactive tool runs on a personal computer. The PODIUM enables the users to develop national-level scenarios of water and food supply and demand on various policy options. Though PODIUM was recognized as a useful tool for generating scenarios, some limitations were also identified. The PODIUM beta version was a cereal based model [PodiumSIM (Zip file 2.21 MB)]. [More on PODIUM...}

MTD: The Multilingual Technical Dictionary (MTD) of all technical terms related to irrigation, drainage, flood management, environment, river training and allied disciplines (see contents below)is a flagship publication of the ICID. First published in English and French languages in 1967, the 4th edition of the MTD (English-French) was brought out on CD-ROM in the year 2002. Current 5th edition defines 9370 technical terms in Chinese, Japanese and Russian, besides English and French.

The MTD brings coherence in sharing and exchange of experiences and has proved to be highly useful for engineers, researchers, students, professionals, planners, designers, academics and all others related with the field of irrigation and drainage. Any term definition can be printed/copied with option to download/updates terms from ICID website. [More on MTD...]


WEAP ("Water Evaluation And Planning" system) is a user-friendly software tool that takes an integrated approach to water resources planning. [More on WEAP....]

Integrated Hydrological Modelling System (IHMS): IHMS-Integrated Hydrological Modelling [File size 109.72 MB]

Manual and Publications [File size:7.76 MB]

SALTMED model has been developed for generic applications. It accounts for different: irrigation systems, crops, soil types and fertilizer applications. The SALTMED model (Ragab, 2002, 2005, 2009, 2015, 2019) was developed to predict dry matter and yield, soil salinity and soil moisture profiles, salinity leaching requirements and soil nitrogen dynamics and nitrate leaching, soil temperature, water uptake, evapotranspiration. The model is friendly and easy to use benefiting from the WindowsTM environment; however, it is a physically based model using the well-known water and solute transport, evapotranspiration, and water uptake equations. For more details contact: Vice President Hon. Dr Ragab Raga

SALMED MODEL 2019SALTMED Publications in Irrigation and Drainage, Virtual Issues: First published on 20 May 2020

Download SALTMED 2019 (File size 398mb)

Please carefully read the document: How to install the SALTMED model. You could also see the Video on YouTube about installation and different parts of the model including problems and solutions. The User Guide has now been updated as well.

Online course

YouTube Playlist:

Trouble shooting, Problems and solutions:

A dedicated ICID YouTube Playlist is also available at:

Web based DSS- Design of Micro Irrigation Systems (DOMIS)

The Precision Farming Development Centre (PFDC) at Water Technology Centre, ICAR-Indian Agricultural Research Institute, New Delhi, India has introduced an online decision support system for designing micro irrigation systems in India. For more...

To help ICID in its objective of serving as a repository of knowledge in irrigation and drainage sector, a revised version of Irrigation Research (IrriSEARCH) database template was presented by the ICID Central Office during the 68th IEC meeting held in Mexico City in October 2017, with inputs from National Committees (NCs) and IRPID Nodes as per the directions of the AC-IRPID (International Research Program for Irrigation and Drainage: Advisory Committee).
IrriSEARCH will serve as an important tool in fulfilling the objectives of IRPID. It aims to bring together all agriculture water management (AWM) research activities from various NCs on a single forum to help others learn from their experiences. The IRPID program is one of the activities that could provide NCs an opportunity to improve its profile within the countries as it provides various research stakeholders in AWM research, a window to exchange and showcase ongoing research activities in the irrigation and drainage sector worldwide.
All the RNs and NCs are requested to encourage the research institutions in their country involved in AWM to join the network by projecting key information of their research activities for wider dissemination and play an active role in fulfilling the objectives of IRPID. For more info, kindly visit:

Institution Registration:
Listing page:

Integrated Hydrological Modelling System (IHMS)

IHMS-Integrated Hydrological Modelling [File size 109.72 MB]

Manual and Publications [File size:7.76 MB]

Drip Irrigation Design and Scheduling (DIDAS)
DIDAS is a software package aimed at assisting irrigators in the design of drip-irrigation systems and in irrigation scheduling. The program simulates drip irrigation of various annual crops and trees in various soils under different conditions of evaporation. It evaluates plant water-use efficiency, but not plant growth or yield. 
The development of DIDAS was supported by the Fund of the Chief Scientist of the Israeli Ministry of Agriculture and Rural Development.


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