DO-BOD Modeling of River Yamuna for Delhi Segment Comparing the Actual Case of Low Water Discharge with that of the Flow Required to be Maintained to Meet Out Environmental Flow Concern of Various Stretches
In the perilously, polluted stretch of Yamuna river from Delhi to Chambal, there is significant fluctuations in dissolved oxygen level from Nil to well above saturation level. There are both abstractive as well as in stream uses like irrigation, domestic water supply and industrial has been served by river water. The condition deteriorates further due to significant water abstraction which reduces the dilution capacity of the river. The 22 km stretch of Delhi is the maximum polluted amongst all. It is acquired that, a large population is dependent on the river, it is of significance to preserve its water quality This paper highlights the present condition of river Yamuna in terms of its quality, flowing through the National Capital Territory of Delhi. Further it has been compared to the scenario if the flow of the river downstream of wazirabad barrage is maintained taking in account the environmental flow requirement of various stretches. MATLAB is the programming tool used here, to develop DO-BOD model of river Yamuna for predicting its quality.