Considering the problems of low data utilization rate，low management efficiency，and slow response to distress in traditional waterway engineering，we conduct research on the integration technology for multi-source time-varying heterogeneous data，build a public data model with unified javascript object notation（JSON），and optimize the problem of high redundancy in the traditional data processing method to improve the efficiency of waterway engineering data integration. A building information modeling（BIM）early-warning platform for waterway engineering is developed with the data integration technology so that the current waterway engineering status portrayed by real-time data can be displayed visually on the BIM platform. Data integration，BIM early warning，and other functions are implemented and verified by the 6 m-deep waterway regulation project（part I）in the Wuhan-Anqing section of the Yangtze River trunk line. The results show that the BIM early-warning platform for waterway engineering based on the data integration technology provides a solid guarantee for relevant personnel to predict distresses and issue timely early warnings and thereby contributes to more efficient and convenient waterway engineering management.