This paper presents a use case of infrastructure data platform based data association for efficient river bed analysis. The platform can automatically collect data from distributed data storage, associate them with others, and provide extracted data for platform users. To prove the usefulness of the platform, this research shows the automatic numerical analysis of two-dimensional river bed-level variation as an example of efficiency improvement, which reproduces the situation after Typhoon 19, 2019, and intelligent data connection of big and distributed river infrastructure data generated every day such as various river survey data, drawing data, construction data, river management data.