Water polo player, with callouts.

Labeled diagram of a pair of water skis.

Visit the U.S. Geological Survey's website for a wide variety of information on water. Content includes data on water quality, water use, acid rain, among others; publications; information on water resource programs; maps; information on...

This photo shows a number of giant water lilies that are part of a wider garden. The giant water lilies stretch out across the surface of the water, blocking much of the light that would normally pierce the water surface. For more...

This page from the University of Washington has an excellent diagram of the water cycle. There are 8 water cycle hands on activities on the bottom of the page. Also there is a link to a teacher reference page.

A unique approach to determining size and weight of an object through water displacement with a variety of balls made of different materials and pitchers of water.

Photo image of a water buffalo wallowing in the water.

What happens when you add water to sodium? This photo says it all. Sodium is an alkali metal, part of a group of extremely reactive metals. It doesn't take much for them to react and as this photo shows, a little water is more than enough.

A road map of the Delaware Water Gap, Pennsylvania and New Jersey, from the Automobile Club of Rochester (1920) showing the Delaware River, principal roads, railroads, bridges, and major landmarks.

A map from 1910 of the United States showing the navigable rivers and lakes of the interior in which water depths are three feet or more.

Buckingham Fountain's animated water display (Chicago)

Water Tower Place & John Hancock Center (Chicago)

Old Water Tower and Pumping Station (Chicago)

Water Tower at Margitsziget (Budapest)

MAS reflected in the water (Antwerp)

Water mill at Kampa Island (Prague)

Still waters fountain, Albertplatz (Dresden)

Old Water Tower, Parc de la Barceloneta (Barcelona)

Old Water Tower (Chicago)

Water Garden, Parque das Nacoes (Lisbon)

An image of Muddy Waters.

An image of Roger Waters.

An image of Water Woman.

An image of Muddy Waters.