Water Cycle

The water cycle, otherwise known as the hydrologic cycle, is the continuous flow of water between earth and sky. It is constantly in a transitioning state of evaporation and precipitation as it changes from a solid to a liquid to a gas.
Water evaporates or rises from the ground and is then absorbed by a cloud, ultimately falling back to the earth in the form of precipitation (rain or snow), which eventually evaporates to the cloud again. The cycle is never-ending.
Sometimes precipitation creates a runoff that travels over the earth's surface to fill lakes and rivers. During this process, the water infiltrates the land and percolates through openings in the soil to replenish underground aquifers. The water travels downward through the ground at a rate of about one foot per day, a process that naturally cleanses it of most impurities.