The Yangtze River was facing sewage infusion from unknown sources. By deploying USVs equipped with side scan sonar and acoustic Doppler current profilers, the project aimed to detect and remediate illegal sewage outlets. Real-time data acquisition and precise mapping capabilities of these technologies enhanced efficiency and safety in pollution remediation efforts. The initiative ensured environmental conservation, emphasizing the importance of innovative solutions in preserving vital waterways like the Yangtze River.