The total amount of water remains essentially constant. Groundwater does not normally occur in underground streams, lakes, or veins. The Hydrologic Cycle and Interactions of Ground Water and Surface Water. Animated diagram of groundwater, water cycle, and water wells. In this equation ∆s represents the change in ground water storage during the period under study. Some of this precipitation seeps into the ground and moves slowly into an underground aquifer, eventually becoming groundwater. Published: Tuesday, 14 August 2012 15:42 The Role of Groundwater in the Hydrologic Cycle. Eventually groundwater emerges back to the surface and continues to participate in the global water cycle. Groundwater is the water that fills cracks and other openings in beds of rocks and sand. Groundwater recharge or deep drainage or deep percolation is a hydrologic process, where water moves downward from surface water to groundwater.Recharge is the primary method through which water enters an aquifer.This process usually occurs in the vadose zone below plant roots and, is often expressed as a flux to the water table surface. Thus hydrologic cycle is completed. Groundwater and surface water are essentially one resource, physically connected by the hydrologic cycle in which water evaporates, forms clouds, and falls to the ground as rain or snow. Water cycle, cycle that involves the continuous circulation of water in the Earth-atmosphere system. The hydrologic cycle. The water cycle describes how Earth's water is not only always changing forms, between liquid (rain), solid (ice), and gas (vapor), but also moving on, above, and in the Earth. This process is always happening everywhere. The Water Cycle for Schools and Students: Advanced students. The water on the Earth's surface--surface water--occurs as streams, lakes, and wetlands, as well as bays and oceans. When sufficient water vapour gathers in the atmosphere the cycle again repeats. Groundwater starts as precipitation, just as surface water does, and once water penetrates the ground, it continues moving, sometimes quickly and sometimes very slowly. Each drop of rain that soaks into the soils moves downward to the water table, which is the water level in the groundwater reservoir. The hydrologic cycle describes the continuous movement of water above, on, and below the surface of the Earth. Many jobs related to groundwater offer opportunities for field work, and the integration of other skills-sets, for example, many environmental groundwater specialists also work in wetlands delineation and surface water fields. It is a closed system, meaning that nothing can be lost, it can only be relocated to another part of the system. The components of groundwater in hydrologic cycle for any area can be represented by an equation: ∆s= recharge – discharge . Groundwater recharge also encompasses water … The water cycle, also known as the hydrologic cycle or the H2O cycle, describes the continuous movement of water on, above and below the surface of the Earth. Groundwater issues are a part of many jobs related to environmental advocacy, conservation, development, and engineering. The Hydrologic (or Water) Cycle is a dynamic system. Of the many processes involved in the water cycle, the most important are evaporation, transpiration, condensation, precipitation, and runoff. Back to the water cycle diagram for students.