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River direction prediction of Shuangliu District Fu River based on ArcSWAT model

The division and prediction of river basins provide important theoretical support for mountain torrents, flow direction control and governance. This paper takes Shuangliu District of Chengdu as the main research area. The experiment is supported by the elevation data of Fuhe River in Huanglongxi Town, Yong’an Town, Shuangliu District of Chengdu from 2020 to 2021. By constructing the model database, dividing the spatial unit of the basin and predicting the river trend, the arcswat model for the River Basin of Shuangliu District of Chengdu is established. The results show that the preliminary watershed area obtained by introducing elevation image analysis is the best. In the follow-up test, by combining the calculated results of hydrological system characteristics in the database with the weather data obtained from the world weather database, it better fitted the water conditions of Shuangliu area and showed excellent performance.