The sponge city monitoring system ensures data accuracy mainly through the following aspects:

　　1. Unified Communication Protocol and Data ValidationThe data transmission of the system adopts a unified communication protocol and has data verification function, which helps ensure the integrity and accuracy of the data during the transmission process.

　　2. Data Storage SpecificationThe data storage system standardizes data storage formats and processing requirements, and ensures data consistency and accuracy. The system also has data backup, sharing, and transmission functions, as well as sufficient storage capacity. The historical data retention time is not less than 10 years, ensuring the long-term reliability of the data.

　　3. Whole process data quality controlControl data quality throughout the entire monitoring process to avoid situations where data is unreasonable or missing. This control includes monitoring the operation status of automatic monitoring equipment and managing environmental interference to ensure the integrity and accuracy of the original monitoring data.

　　4. Data organization and analysisIn the data processing stage, the system eliminates invalid data and conducts reasonable data analysis to avoid accuracy issues caused by improper data organization and analysis.

　　5. The scientificity of the monitoring planThe monitoring plan determines the content, scope, and methods based on different monitoring purposes, avoiding excessive monitoring or exclusion of monitoring, and achieving efficient utilization and accuracy of data.

　　6. Evaluation method of "monitoring+model"Considering the limitations of monitoring time and space, the system encourages the use of the "monitoring+model" evaluation method, which can more efficiently and accurately evaluate the effectiveness of sponge city construction, thereby improving the accuracy of data.

　　7. Application of Information System TechnologyThe system fully utilizes information system technologies such as the Internet of Things and big data to provide support for urban water forecasting and intelligent operation, maximize the benefits of monitoring work, and further improve data accuracy.

　　8. Intelligent cloud backup services and high security data storageThe system provides intelligent cloud backup services and high security data storage to ensure the security and reliability of data.

Through the above measures, the sponge city monitoring system can ensure that the collected data has a high degree of accuracy, providing reliable data support for urban water resource management.