Cinematic 8K 7680×4320 30p. If you desire, you can grab the any 4K or HD crop part you wish. Slow shutter camera speed. A stream is a body of water with surface water flowing within the bed and banks of a channel. The stream encompasses surface fluxes that respond to geological, geomorphological, hydrological and biotic controls. The study of streams and waterways in general is known as surface hydrology and is a core element of environmental geography. Small rivers can be referred to using names such as stream, creek, brook, rivulet, and rill. Rivers are part of the hydrological cycle. Stone, stones, forest, mountain, green, fresh.