ENVIRONMENTAL EFFECT OF LIFT IRRIGATION SCHEME-A CASE STUDY

Purandar Lift Irrigation scheme is on Mula-Mutha Ri ver near Pune in India envisaged to supply 4 TMC of water to drought prone area of Purandar,D aund,Haveli & Baramati. It is observed that the raw water quality available near source is far below the acceptable limits for surface water irrigation. The farmers are raising objections for supply of ra w water for irrigation purpose. The main reason for the reluctance of the farmers in using a vailable river water is undesirable organic & in organic impurities,blackish green color & obnoxiou s smell of water. The chemical analysis results indicate that BOD (Biological Oxidation Dem and) & COD (Chemical Oxidation Demand) values of the river water used for irrigati on purpose are above permissible limits. Our main aim in the project was to find out whether the polluted water of the river would have any long term environmental effects on the soil and ground water of the Saswad-Purandar area. For this purpose we conducted several site visits t o check the extent of pollution of the river water at different locations. We tested soil & grou nd water samples of the area where lifted water is used for irrigation. We also suggested low cost treatmentaerated facultative lagoons to treat the river water.

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