Journey to four major river systems - the Mississippi, Amazon, Jordan and Mekong rivers - and take a look at the challenges happening to the people whose livelihood hinges around them.

In this activity students will test amount of water, velocity and steepness of a tabletop riverbed to see how it affects a river's depth, width, and delta size.

An interactive site to teach students how rivers are formed, how they change, and why they are important. Cross-curricular activities in language arts, math, science, social studies, and art, some of which include worksheets to download,...

Look at a map of Vietnam with all the major cities and the Mekong River and delta. Very easy to read.

This is a comprehensive analysis of the importance of the Danube River Basin and ways to balance human and ecological needs in the basin. The reason behind this study is the European Union's move to open shipping lanes in the Danube and...

Experience the Okavango, a "river that never meets the sea." Learn about the animals there, how to make papyrus, and swampy deltas.

Take a virtual tour of Arkansas by clicking on each of its major regions .. the Ozarks, River Valley, Central, Delta, Timberlands, and the Ouachitas region. Terrific photos, video clips, maps, and descriptive information is included for...

This map from the United Nations is a very detailed map of the Okavango River Basin, showing rivers, wetlands, cities, country boundaries and much more. Increase the viewing percentage to read the map easily.

A comprehensive site on Ancient Egypt, including sections on the lifestyle, geography, religion, and politics of the country.

Illustrated tutorial explains estuary ecosystems. Animations and illustrations help students become more familiar with the plant and animal communities which make up this coastal habitat.

A small map of Botswana that shows the Okavango River and delta as well as the salt pans. From the Perry-Castaneda Collection.

A map of Egypt and the Nile Valley from the delta south to the confluence of the Sobat River and the Upper Nile. This map shows Egypt Proper, Nubia, Kordofan, Sudan, Eritrea, and portions of Abyssinia and British Somalia. The map also...

From the Perry-Castaneda Collection, a relief map of Vietnam, showing the highlands, river valleys, and the Mekong Delta. Click on the map to zoom in for a closer view.

Part of the PBS series "Journey to Planet Earth," this site explores the "fundamental problem facing today's farmer: how to feed the world's growing population without endangering our environment." Includes video and educational resources.

A map from 1873 of the Ganges River delta in what was at the time the Bengal province of British India. The map shows the main course of the Ganges River, the Hoogly and Hooringotta distributaries, and the Sunderbunds at the mouth of the...

This NASA satellite image shows the Ganges River Delta. The Ganges River flows through India and Bangladesh. For more information on rivers, check out the ten longest rivers in the world or our fun river facts for kids.

A map from 1919 of the Pearl River delta from Canton (Guangzhou) to Hong Kong and Macao on the China Sea. At this time, Hong Kong was a possession of Great Britain, and Macao was officially a Portuguese colony. This map shows the river...

A really cool site showing Satellite (Landsat 7) images of unique geographical and meteorological phenomena. Images show cloud formations to rainforest devastation.

A map of the Perdido River area, including Mobile Bay, Pensacola, and the Mississippi Delta. The Perdido River was the disputed boundary of West Florida between the United States and Spain, resolved in 1819 when Spain ceded Florida under...

Fishing and shellfish gathering have sustained human life in the 5,000 km2 property, which is formed by the arms of three rivers. The site comprises brackish channels encompassing over 200 islands and islets, mangrove forest, an Atlantic...

A map of Egypt showing the major cities of the Nile Delta and the Nile River south to Assouan at the First Cataract in Upper Egypt.

A map from 1901 of the political and physical features of Africa. The map uses color-contouring to show highlands above 2000 feet in buff tints, lowlands in greens, and the submerged part of the continental plateau in light blue. The map...

A really cool site showing Satellite (Landsat 7) images of unique geographical and meteorological phenomena. Images show cloud formations to rainforest devastation.

Experience the Okavango, a "river that never meets the sea." Learn about the animals there, how to make papyrus, and swampy deltas.