PARAMETRIC EVALUATION OF WATER LOGGING USING GIS, A CASE STUDY

Abstract

An area is said waterlogged when soil pores within the root zone of the crops are saturated to such extent that normal circulation of air within the soil pores is totally cutoff. Waterlogged soils create anaerobic conditions at the root of plants and suffocates the plant growth and thus render the land unfit for cultivation. The general cause of water logging is attributed to imbalance in the hydrologic system. The rise in water table is the main phenomenon that causes both the problems of water logging and salinization that affects ultimately the crop growth adversely. To avoid such a condition, equilibrium between inflow and outflow need to be maintained. Assessment of water logging has to be done to know the cause and adopt the corresponding preventive measures. In this dissertation, the study was undertaken to evaluate the parametric of water logging, a case study of Tawa Command Area, Madhya Pradesh, India. Geographic Information System (GIS) is used in carrying out analysis of geographic data and their attributes. The available data for evaluating the parametric of water logging are water table depth for pre monsoon and post monsoon of the year 1995 to 1999, canal water input, seasonal rainfall and Tawa Command Map. GIS provide the facilities to integrate and analyze multi disciplinary (source) data. GIS has diverse applications and is becoming popular in many fields/ sectors because of their capabilities. Water logging in pre monsoon only occurred in 1999, which may due to canal seepage or chocking up of drainage in Timrani Block while in post monsoon 1998 in Hoshangabad Blocic. The maximum extent of water logging occurred in post monsoon 1996 (18295 ha), and the minimum in pre monsoon 1999 (1168 ha)..