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Water is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms. It is vital for all known forms of life, even though it provides no calories or organic nutrients. Its chemical formula is H2O, meaning that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds.Two hydrogen atoms are attached to one oxygen atom at an angle of 104.45°.

"Water" is the name of the liquid state of H2O at standard ambient temperature and pressure. It forms precipitation in the form of rain and aerosols in the form of fog. Clouds are formed from suspended droplets of water and ice, its solid state. When finely divided, crystalline ice may precipitate in the form of snow. The gaseous state of water is steam or water vapor. Water moves continually through the water cycle of evaporation, transpiration (evapotranspiration), condensation, precipitation, and runoff, usually reaching the sea.

Water covers 71% of the Earth's surface, mostly in seas and oceans. Small portions of water occur as groundwater (1.7%), in the glaciers and the ice caps of Antarctica and Greenland (1.7%), and in the air as vapor, clouds (formed of ice and liquid water suspended in air), and precipitation (0.001%).

Water plays an important role in the world economy. Approximately 70% of the freshwater used by humans goes to agriculture. Fishing in salt and fresh water bodies is a major source of food for many parts of the world. Much of the long-distance trade of commodities (such as oil, natural gas, and manufactured products) is transported by boats through seas, rivers, lakes, and canals. Large quantities of water, ice, and steam are used for cooling and heating, in industry and homes. Water is an excellent solvent for a wide variety of substances both mineral and organic; as such it is widely used in industrial processes, and in cooking and washing. Water, ice and snow are also central to many sports and other forms of entertainment, such as swimming, pleasure boating, boat racing, surfing, sport fishing, diving, ice skating and skiing.

Water Media

14,852 media by topicpage 1 of 149
Water, A C - State: Ohio - Year: 1861

Water, A C - State: Ohio - Year: 1861

Papers Relating to Citizens

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Forest Fire Equipment: Water Equipment - All States

Forest Fire Equipment: Water Equipment - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Forest Fire Equipment: Water Equipment - All States

Forest Fire Equipment: Water Equipment - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Forest Fire Equipment: Water Equipment - All States

Forest Fire Equipment: Water Equipment - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Forest Fire Equipment: Water Equipment - All States

Forest Fire Equipment: Water Equipment - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Forest Fire Equipment: Water Equipment - All States

Forest Fire Equipment: Water Equipment - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Forest Fire Equipment: Water Equipment - All States

Forest Fire Equipment: Water Equipment - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Forest Fire Equipment: Water Equipment - All States

Forest Fire Equipment: Water Equipment - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Fire Suppression: Ground Water - All States

Fire Suppression: Ground Water - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Fire Suppression: Ground Water - All States

Fire Suppression: Ground Water - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Fire Suppression: Ground Water - All States

Fire Suppression: Ground Water - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Yield Studies - All States

Water Yield Studies - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Yield Studies - All States

Water Yield Studies - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Yield Studies - All States

Water Yield Studies - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Yield Studies - All States

Water Yield Studies - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Ground Water Studies - All States

Ground Water Studies - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Ground Water Studies - All States

Ground Water Studies - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Minnesota

Water Sports - Minnesota

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Kentucky

Water Sports - Kentucky

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Idaho

Water Sports - Idaho

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Idaho

Water Sports - Idaho

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Idaho

Water Sports - Idaho

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Idaho

Water Sports - Idaho

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Rhode Island

Water Sports - Rhode Island

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Oregon

Water Sports - Oregon

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Oregon

Water Sports - Oregon

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Oregon

Water Sports - Oregon

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Arizona

Water Sports - Arizona

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Virginia

Water Sports - Virginia

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Electricity - Washington

Water Use: Electricity - Washington

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Fire Suppression: Ground Water - All States

Fire Suppression: Ground Water - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Fire Suppression: Ground Water - All States

Fire Suppression: Ground Water - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Forest Fire Equipment: Water Equipment - All States

Forest Fire Equipment: Water Equipment - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Forest Fire Equipment: Water Equipment - All States

Forest Fire Equipment: Water Equipment - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Ground Water Studies - All States

Ground Water Studies - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Wyoming

Water Sports - Wyoming

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Wisconsin

Water Sports - Wisconsin

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Yield Studies - All States

Water Yield Studies - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Electricity - Missouri

Water Use: Electricity - Missouri

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Electricity - Iowa

Water Use: Electricity - Iowa

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Electricity - Idaho

Water Use: Electricity - Idaho

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Electricity - Georgia

Water Use: Electricity - Georgia

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Electricity - Arkansas

Water Use: Electricity - Arkansas

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Irrigation - Washington

Water Use: Irrigation - Washington

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Electricity - Arizona

Water Use: Electricity - Arizona

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - West Virginia

Water Sports - West Virginia

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Washington

Water Sports - Washington

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Virginia

Water Sports - Virginia

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - General

Water Sports - General

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Idaho

Water Sports - Idaho

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Yield Studies - All States

Water Yield Studies - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Yield Studies - All States

Water Yield Studies - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Irrigation - New Mexico

Water Use: Irrigation - New Mexico

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Irrigation - New Mexico

Water Use: Irrigation - New Mexico

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Irrigation - Idaho

Water Use: Irrigation - Idaho

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Irrigation - Arizona

Water Use: Irrigation - Arizona

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Irrigation - Arizona

Water Use: Irrigation - Arizona

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Irrigation - Arizona

Water Use: Irrigation - Arizona

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Irrigation - Utah

Water Use: Irrigation - Utah

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Electricity - Washington

Water Use: Electricity - Washington

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Electricity - Virginia

Water Use: Electricity - Virginia

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Electricity - Tennessee

Water Use: Electricity - Tennessee

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Electricity - Oregon

Water Use: Electricity - Oregon

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Use: Electricity - Oregon

Water Use: Electricity - Oregon

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Yield Studies - All States

Water Yield Studies - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Disease Control (Water Damaged) - Washington

Disease Control (Water Damaged) - Washington

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Disease Control (Water Damaged) - Washington

Disease Control (Water Damaged) - Washington

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Disease Control (Water Damaged) - Virginia

Disease Control (Water Damaged) - Virginia

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Disease Control (Water Damaged) - Vermont

Disease Control (Water Damaged) - Vermont

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports: Non -National Forest

Water Sports: Non -National Forest

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements: General

Stock Water Improvements: General

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Idaho

Water Sports - Idaho

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Florida

Water Sports - Florida

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Florida

Water Sports - Florida

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Florida

Water Sports - Florida

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Florida

Water Sports - Florida

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Florida

Water Sports - Florida

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Florida

Water Sports - Florida

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Sports - Florida

Water Sports - Florida

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Quantity Yield - All States

Water Quantity Yield - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Quantity Yield - All States

Water Quantity Yield - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Water Quantity Yield - All States

Water Quantity Yield - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

Stock Water Improvements - All States

Stock Water Improvements - All States

Photographs Relating to National Forests, Resource Management Practices, Personnel, and Cultural and Economic History

U.S. National Archives

The objects in this collection are from The U.S. National Archives. The U.S. National Archives and Records Administration (NARA) was established in 1934 by President Franklin Roosevelt. NARA keeps those Federal records that are judged to have continuing value—about 2 to 5 percent of those generated in any given year. There are approximately 10 billion pages of textual records; 12 million maps, charts, and architectural and engineering drawings; 25 million still photographs and graphics; 24 million aerial photographs; 300,000 reels of motion picture film; 400,000 video and sound recordings; and 133 terabytes of electronic data. All of these materials are preserved because they are important to the workings of Government, have long-term research worth, or provide information of value to citizens.

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