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Community Water Model

Copyright

IIASA WAT Program

Authors

Developer

Version

1.10

Version Date

Oct 29, 2025

Content:

• 1. Introduction
  • Community Water Model - CWatM
  • Acknowledgement of Funding
  • Developer
• 2. NEWS
  • 10 Year Anniversary
  • Major Updates
  • Publication using CWatM
  • Additional selected publications
  • Github Version History
• 3. The Community Water Model
  • Model Philosophy
  • FAIR(R) software
  • Model design and processes
  • Features of the Model
  • Performance
• 4. Using CWatM
  • Please cite when using CWatM
  • Downloading CWatM
  • Contributing to CWatM
  • GNU General public license
• 5. HOW-TO-GUIDE Problem oriented
  • 5. HOW-TO-USE - Problem oriented
• Installing CWatM
  • Installing Python
  • Installing CWatM
  • Running the model for the first time
  • Using Flags
• Settingsfile
  • Settings file
• Output Options
  • Output meta information
  • Model Output
• Testing Data
  • Testing data
• Initialization
  • Initialization
• Calibration
  • Calibration method
  • Suggested Calibration parameters
  • Calibration tool structure
  • How it works
  • What is needed
  • Recommendations
  • Running calibration
  • Run runCalibration.bat
  • For testing
  • Running it on your computer
  • Preparation for another catchment
  • Creating an initial netcdf file for warm start
  • Cutting out a catchment as mask map
  • Calibration of a downstream catchment
  • Joining best sub-basin results to calibration maps
  • References
• Recover former runs
  • recover or reproduce former runs
• Tips and Tricks
  • Settings file
  • Output
• 6. REFERENCES – Information
  • 6. REFERENCES - Information
• Errors
  • Potential Errors
  • Error handling of CWatM – list of error codes
• List of output variables
• 7. TUTORIALS – Learning
  • 7. TUTORIALS - Learning
• Offline Training
  • Tutorials
• Online Training
  • YouTube videos
• 8. EXPLANATION - Understanding
  • 8. EXPLANATION - Understanding
• Data
  • Data requirements
  • Data format
  • Data storage structure
  • Static data
  • Temporal data for each year
  • Continous temporal data
  • References
• Hydrological processes
  • Overview
  • Detailed description of processes
  • References
• 9. Technical Guide
  • 9. Technical Guide
• Source code
  • Source code on Github
  • Source code
  • Download Manual as pdf
  • Remarks
• Testing Framework
  • Purpose
  • Test Types and Execution Modes
  • Configuration File Structure
  • Testing Workflow
  • Code Quality and Standards
  • Usage Examples
  • Files and folders
  • Testing CWatM
  • Results
• 10. Example Zambezi
  • Zambezi basin
  • Assessment of water stress
  • Water Stress Index for Zambezi
• 11. Forum
  • Questions and answer forum
• 12. Frequently Asked Questions (FAQ)
  • Community Water Model (CWatM) - Frequently Asked Questions
• 13. CWatM Glossary
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • K
  • L
  • M
  • N
  • O
  • P
  • Q
  • R
  • S
  • T
  • U
  • V
  • W
  • X
  • Z
  • Mathematical Equations and Formulas