Wetland ecosystems are extremely valuable to wildlife, supporting a greater number of animals than any other type of habitat. Wetlands also absorb flood waters; filter chemicals, sediments, and other impurities out of drinking water;...

"This report documents the problem of water scarcity in parts of northern China and describes China's agricultural water management policies as well as reforms underway to encourage water conservation." (USDA) (PDF Format)

In this science activity, students investigate the water cycle by testing the water evaporated from leaves (transpiration). They investigate concepts of evaporation and the movement of water through the different states of the water...

Discusses the chemistry of nitrate, the negative agricultural effects of too much nitrate in soil and in water sources, its toxicity to plants and livestock, and the impact on human health.

The first two sections provide a general overview of findings on nutrients and pesticides and their implications for water-resource management and protection. More detailed technical discussions of the sources, distributions, and...

This U.S. Geological Survey website features a fictious town, Dryville, and uses it to illustrate every aspect of water management that you might encounter. Click Home to access the site in Spanish.

This website offers three activity centers: Questionnaires, Opinion Surveys, and Challenge Questions. Take a look at these interesting water research activities from the US Geological Survey. Click Home to access the site in Spanish.

Excellent information provided by the U.S. Geological Survey.

Students measure the effectiveness of water filters in purifying contaminated water. They prepare test water by creating different concentrations of bleach (chlorine-contaminated) water. After passing the contaminated water through...

Through an overview of the components of the hydrologic cycle and the important roles they play in the design of engineered systems, students' awareness of the world's limited fresh water resources is heightened. The lesson lays the...

Interdisciplinary unit about the risk of exposure to arsenic in public drinking water. Math, language arts, social studies, and science are incorporated into the lessons.

The United States Geological Survey offers a complete look at water science in glossary form. Take advantage of the topic guides at the top of the site. You'll find great maps, clipart and activities centers. Click Home to access the...

Soil is the foundation of conventional on site wastewater treatment.The drainfields used with on site systems work because the soil around the trenches acts as a filter and removes organic matter, some of the nutrients present in...

[Free Registration/Login may be required to access all resource tools.] Water pollutants can have an effect on both the ecology of ecosystems and on humans. As a result of water pollution, humans may not be able to use a waterway for...

Sometimes called rich fens, find out about these saturated environments that are fed with mineral-rich groundwater and occur at low points or slopes in the landscape where the soil surface is intercepted by the water table.

75% of our earth is covered by water. Water can be found in oceans, lakes, rivers, groundwater, and sea ice. View these captivating photos of our earth showing the different water sources and images of our earth taken by NASA. Background...

Water is the source of life on earth. It exists in many forms and is constantly changing. The circulation and conservation of earth's water is called the hydrologic (or water) cycle. Find out how water evaporates, condensates,...

Students learn about water management, treatment and purification- global issues that must be addressed to ensure a continued supply of safe water for the growing human population and for the organisms with which we share this planet.

Students design and build model landfills using materials similar to those used by engineers for full-scale landfills. Their completed small-size landfills are "rained" on and subjected to other erosion processes. The goal is to create...

Students gain a basic understanding of the properties of media- soil, sand, compost, gravel- and how these materials affect the movement of water (infiltration/percolation) into and below the surface of the ground.

This lesson teaches the concept of a watershed and why it is important in the context of engineering hydrology. Students learn about runoff and how we visualize runoff in the form of hydrographs.

This tutorial provides some insight to the study of human impacts on water supplies.

Learn about EPA's work to protect and manage water resources and what you can do to help.

Provides information on what to do after a flood to protect well water from contamination, the testing of private well water, and protecting private well water.