Lakes, Rivers and Streams Indicates external links with no implied endorsement. L akes, rivers and streams generally contain freshwater, or water that is not salty. Lakes are an essential source of water in the United States. Most of our drinking water, as well as water used for irrigation, industry, and hydropower, comes from freshwater lakes and reservoirs. Ponds Ponds are smaller than lakes, which support the growth of aquatic plants throughout.
Pond ecosystems serve as important habitats for various aquatic and terrestrial species.
Ponds are often artificially formed bodies of water, which can have many uses, from crop irrigation to boating, swimming, and fishing. Reservoirs Reservoirs are naturally or artificially formed bodies of water used for the storage and control of water. Reservoirs and lakes contain most of the water we use for drinking water, irrigation, hydropower, and industry. Rivers Rivers are large natural streams of flowing water that empty into lakes, estuaries, or oceans. Streams Streams are smaller bodies of water that flow in natural or artificial channels.