Food crop production is known to be critically dependent on the quality and quantity of soil moisture and ground water. Seasonal variability of precipitation, prolonged droughts, more efficient evaporation-transpiration, and occasional seawater over-wash have localized serious impacts on crop production and threatened the very livelihood of the people. These impacts are expected to intensify according to climate change scenarios. The scenarios expect precipitation to increase but variability of precipitation is not featured or accounted for. Furthermore, sea level rise will most likely lead to land erosion, thus decreasing land surface area for storage of water and tree crops.  Food crop production during water stressed conditions is minimal as ground water lenses get dry or turn brackish. These combined impacts on the livelihood of the people would have shortened their life, caused malnutrition  particularly among children, and led to greater exertion on the adults in the toil of subsistence lifestyle.  The consumption and production of food crops have declined in recent years. Causes of such decline possibly include urban migration, decreasing size of land for agricultural production, and climate related disasters and seasonal precipitation variability.