Importance of irrigation return flow on the groundwater budget of a rural basin in India

摘要: In many areas of India, the assessment groundwater balance at basin scale is a very important challenge for better management this resource that stressed by high exploitation through pumping irrigation. A methodology presented and applied to case study in hard-rock area. The based on relationship between water over given period resulting level fluctuations (Water Table Fluctuation method). It found main positive term budget return flow from paddy fields From June 2001 2002, despite normal rainfall, annual little bit negative, inducing general depletion 1.18 m. Decreases rate, or harvesting measures artificial recharge are necessary reverse deficit ensure sustainable resource.