As precipitation falls it also created water runoff down mountains, valleys and land masses. Runoff can also be caused from the melting of ice and snow. As seen in this picture, some of this water could have come from the melting snow on top of these mountains, It trickles down toward a spring possibly headed to a stream or river which will eventually end up in one of the worlds oceans. The collection of all the rivers, streams, oceans, springs and all life contained on Earth is within the Biosphere.
As the evaporated water from the surface of the water collects it forms clouds. These clouds when cooled will create condensation. Condensation are tiny water droplets. Once the droplets become too heavy precipitation will occur. The precipitation will fall back down to the earth in the form of rain, sleet, snow and hail. This water can than take the pathway through runoff back to the lakes, rivers, streams and oceans or seep back down into the ground replenishing the aquifers or ground water.
As the sun heats the surfaces of the oceans, lakes, and streams, it evaporates and rises into the atmosphere forming clouds and precipitation.
Water soaks into the soil after it rains and becomes groundwater. This groundwater is stored in aquifers at the earths water table. Aquifers are the collection of runoff from precipitation and lakes, rivers and streams seeping into the ground. This water is deep within the earth below the earths crust. It has been there in many cases for thousands of years. The water is replenished by the continued cycle of water evaporating, precipitating and seeping into the ground. The water can be pumped through wells, and water stations to provide drinking water for communities and assist in the watering of crops for farmers across the country.