WATER MOVES
Water, in its many forms, moves all over the Earth. Water vapor moves with the air currents, falling as rain from the clouds. Frozen glaciers creep slowly down from polar regions, then recede as they warm and melt. Liquid water moves from rushing rivers to ocean currents or to groundwater. Ocean waters generally move from the warm area around the equator away towards the poles, causing currents. |
Running WaterStreams and rivers are examples of running waters. Stream water usually comes from groundwater or underground springs and from runoff caused by rain or melting snow. During rainy seasons, ephemeral streams that last for only brief periods are primarily fed by surface runoff. Stream flow is the volume rate of flow of water past a specific point in a stream, usually measured in cubic feet per second (cfs). This measurement is used to compute the loading, or total volume of solids carried in a stream. |
Still WaterLakes and reservoirs are examples of non-moving waters, or rather, less fast moving water. Even lakes and reservoirs have places where water enters and exits. |
Ready to measure? See Measuring Rate of Flow |