pool, pond, or puddle. Pond – a body of water smaller than a lake, especially those of artificial origin. Port – a maritime facility where ships may dock to load and discharge passengers and cargo. Pothole – see kettle Puddle – a small accumulation of water on a surface, usually the ground. Reflecting pool – a water feature usually consisting of a shallow pool of water, undisturbed by fountain jets, for a reflective surface. Reservoir – a place to store water for various uses, especially drinking water, which can be a natural or artificial (see lake and impoundment). Rill – a shallow channel of running water. These can be either natural or man-made. Also: a very small brook; rivulet; small stream. River – a natural waterway usually formed by water derived from either precipitation or glacial meltwater, and flows from higher ground to lower ground. Rivulet – (UK, US literary) a small or very small stream. Roadstead – a place outside a harbor where a ship can lie at anchor; it is an enclosed area with an opening to the sea, narrower than a bay or gulf (often called a "roads"). Run – a small stream or part thereof, especially a smoothly flowing part of a stream. Salt marsh – a type of marsh that is a transitional zone between land and an area, such as a slough, bay, or estuary, with salty or brackish water. Sea – a large expanse of saline water connected with an ocean, or a large, usually saline, lake that lacks a natural outlet such as the Caspian Sea and the Dead Sea. In common usage, often synonymous with the ocean. Sea loch – a sea inlet loch. Sea lough – a fjord, estuary, bay or sea inlet. Seep – a body of water formed by a spring. Slough – several different meanings related to wetland or aquatic features. Source – the original point from which the river or stream flows. A river's source is sometimes a spring. Shoal – a natural submerged ridge, bank, or bar that consists of, or is covered by, sand or other unconsolidated material, and rises from the bed of a body of water to near the surface. Sound – a large sea or ocean inlet larger than a bay, deeper than a bight, wider than a fjord, or it may identify a narrow sea or ocean channel between two