1 Introduction  
2 Literature Background  
2.1 Social Media  
2.2 Social Media Mining  
2.3 Social Media Based Applications  
2.4 Status of Hydroinformatics  
3 Model and Methodology  
3.1 Hydroinformatics Model Based Social Media  
3.2 Methodology  
4 Applications of Social Media in Hydroinformatics  
4.1 Social media applications in Water quantity Issues  
4.2 Social media applications in Water Quality Issues  
5 Research Trend and Open Problems  
5.1 Data Collection  
5.2 Data Quality Management  
5.3 Fake News Detection  
5.4 Security and Privacy Issues  
5.5 Social Media Analysis Algorithms and Platforms  
6 Conclusion