This section will take a deeper look at the processes that govern streams and rivers. Rivers are dynamic systems. While we may represent them on maps as being fixed in space, the form, flows, and water quality of rivers change greatly with the seasons and over the years. A mountain stream may be furious whitewater in June, tranquil in August, and frozen in January. A prairie stream may be a muddy torrent after a rain storm but dry a month later. Understanding the complex, dynamic nature of rivers and streams allows us to make responsible decisions about how we interact with them.