By A Representative During the 2025 southwest monsoon , the Yamuna experienced one low, one medium, and one high flood spell in its upper segment, leading to a temporary but noticeable improvement in water quality along the Delhi stretch. According to a detailed analysis by the South Asia Network on Dams, Rivers and People (SANDRP) , the river received substantial flows for nearly six weeks—from the last week of July to the first week of September—owing to heavy rainfall in its catchment areas.