Due to the significance of waterway depths in river development, the effect of the evolution of bars and troughs on waterway expansion has always been interesting for river management and water depth conservation. In this study, the aim is to expand the waterway dimensions of the Jingjiang Reach, and it is necessary to determine how river evolution processes relate to its potential for waterway depth improvement and navigation hindrances. Therefore, the sedimentation, hydrological, and terrain data of the Jingjiang Reach from 1950 to 2020 were analyzed to elucidate the aforementioned relationships After the commissioning of the Three Gorges Dam, it was found that the scour of the low flow channel has accounted for 90.95% of all scour in the Jinjiang Reach. Furthermore, its central bars and beaches have shrunken by 9.4% and 24.9%, respectively, and 18.3% as a whole. In view of the bed scour and waterway regulation projects that occurred in the Jingjiang Reach, we investigated the continuity of a 4.5 m × 200 m × 1050 m (depth × width × bend radius) waterway along the Jinjiang Reach, and found that it is navigationally hindered over 5.3% of its length. Furthermore, part of the Jingjiang Reach is an important nature reserve, and there are also many water-related facilities in this area; hence, these conditions inhibit the implementation of waterway deepening projects. As a result, the study findings indicate that there are many challenges with regards to increasing the waterway depths of the Jingjiang Reach.