This Oregon State University site offers in-depth information on groundwater including: human impacts, protection, contamination, regulations, agencies, community action, and community stewardship. Although some information, such as how the geology of Oregon affects groundwater, is specific to that state much of the information is transferable to other locations. Full description.

This website provides information on international water law and policy. The International Water Law Project offers full text of many international and regional agreements, declarations and resolutions. Regional documents are organized by continent and then in many cases by waterway to reflect agreements for a particular river basin. The case law section provides examples from the Permanent Court ... Full description.

This set of introductory materials outlines the basic concepts of groundwater and hydrology. Graphics with accompanying definitions explain basic hydrologic terms such as aquifer, recharge, and discharge. There are also news articles, a reading list, a questionnaire, and a quiz. Full description.

This module on measuring temperature and its effects on water quality is from a larger series on water quality investigations. The purpose of the site is to help students recognize that temperature can affect the organisms that live in water, describe the factors that can change the temperature of a body of water, and how to measure, graph, and interpret the effects of temperature on fish. It provides ... Full description.

This article from Agriculture21 cites the management practices and policies that will be necessary to avoid water crises in the coming three decades. There are links to information on raising water productivity, improving irrigation technology, and modernizing irrigation management. The text is available in English, French, Spanish, Arabic, and Chinese. Full description.

This publication provides an overview of groundwater occurrence and of the main issues affecting its quantity and quality. It shows how the resource is used in our cities, in industry and mining, in agriculture and rural water supply; how it sustains many of our wetlands; how in its own undramatic way groundwater has become an integral part of billions of people's lives. Numerous examples illustrate ... Full description.

Visitors to this site can review Canadian water policy and legislation for both provinces and federal government. Topics include the nature of water, water policy and legislation, water management, water and culture, and links to information and services (a glossary, news articles, and a teachers' corner). A French translation is available. Full description.

Temperature changes in surface water may affect the solubility of substances and affect ecosystems by increasing plant growth, which in turn, decreases the amount of dissolved oxygen available for animals. In this activity, students measure and compare the temperature of water in various zones of a river, stream, pond, or lake. A materials list, instructions, discussion questions, and a printable ... Full description.

This module offers students the opportunity to analyze and qualitatively compare the inorganic ion content and pH of different sources of local drinking water. The students collect, organize, graph, and analyze quantitative data showing the uses of groundwater in their state. They will read, summarize, and discuss news articles about the emerging impact of merchant power plants on groundwater resources. ... Full description.

In this lesson, students create a community service advertising campaign that raises awareness about the importance of keeping trash out of the marine ecosystem. Students work in teams to create different ad campaigns geared toward particular target audiences and produce posters promoting their messages. Links to additional information and resources are also provided. Full description.