Bhavani. R
For hydrological analysis, it is necessary to adopt a suitable method to compute the applicable rainfall by considering all the rain gauge stations of the catchment area. For computation of applicable rainfall, important methods being followed are Arithmetic mean method and Theissen polygon method. This paper aims at comparision of applicable rainfall obtained by Arithmetic mean method and Theissen polygon method. Anantapuram district has been selected for the present study and rainfall data for a period of 10 years has been used. It has been concluded that the values of annual rainfall obtained by Arithmetic mean method and Theissen polygon method are not showing much variation for all the considered years.
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