Soils will method and hold sizeable quantity of water. they will soak up water, and can keep doing thus till they're full, or till the speed at that they will transmit water into and thru the pores is exceeded. a number of this water can steady drain through the soil (via gravity) and find yourself within the waterways and streams, however a lot of of it'll be preserved, despite the influence of gravity. a lot of of this preserved water is employed by plants and different organisms, so tributary to land and soil health. Pores (the productivityareas that exist between soil particles) offer for the passage and/or retention of gasses and wetnessat intervals the profile. The soil's ability to retain water is powerfully associated with particle size; water molecules hold a lot of to the fine particles of a clay soil than to coarser particles of a sandy soil, tightlythus clays usually retain a lot of water. Conversely, sands offer easier passage or transmission of water through the profile. Clay type, organic content, and soil structure inadditionallyfluence soil water retention. The maximumquantity of water that a given soil will retain is named cubage unit, whereas a thusil so dry that plants cannot liberate the remaining wetness from the soil particles is alleged to be at weakeningpurpose. out there water is that that the plants will utilize from the soil at intervals the vary between cubage unit and weakening purpose.