The water ecological environment quality of Baiyangdian Basin is of paramount importance to Xiong'an New District and surrounding areas. In order to master the surface water resources in the Baiyangdian Basin, this paper carries out visual interpretation based on high-resolution remote sensing images. By obtaining the spatial location, dry-up length and dry out ratio of the cut-off section of the river in spring 2018 (low-water period) and summer of 2018 (high-water period), we analyzed the spatial distribution, seasonal variation, and causes of cut-off rivers in the Baiyangdian Basin. The results show that (1) The cut-off length of the river in spring and summer 2018 was about 1100km. In 2018, the length of the dry river during the high-water period was reduced by 98.78km compared with the low-water period. Although the river dry-up and cut-off conditions have slightly improved in summer compared with spring, the overall situation was still severe in the Baiyangdian Basin. (2) The Tang River, Dasha River, and Ci River have dried up all year round in serious conditions. In the two seasons of the monitoring period, the river sections with dry-up and cut-off conditions exceeded 50km. (3) Compared with other cities in the Baiyangdian Basin, Baoding City had the longest perennial dry river course during the monitoring period. Specifically, the perennial dry river course reaches 535.54km, and the intermittent dry river course reaches 250.3km. Therefore, Baoding City is a crucial area for improving the water ecological environment in the Baiyangdian Basin. (4) The river dry-up problem is already severe in the Baiyangdian Basin. Therefore, it is recommended to formulate a strict water resource planning and utilization management system. At the same time, it is necessary to establish a remote sensing dynamic monitoring mechanism for the surface water resources of the river basin. The mechanism as mentioned above can provide a decision-making basis for inter-basin water transfer projects and evaluate the effects of water transfer projects after implementation, thereby providing technical support for improving the quality of the water ecological environment in the Baiyangdian Basin.