Part of the main feature called "Lost in the Grand Canyon," follow scientific explorer John Wesley Powell on his expedition down the Colorado River in 1869. This interactive map with its accompanying journal entries details the course of...

Students examine available data of water in the Colorado River Basin, study the possible consequences of changes to various user groups, and suggest solutions to adapt to these changes.

Come and check out this educational resource featuring the Colorado River Toad. The content of this site includes information on this species' characteristics, range, habitat, diet, reproduction, and behavior.

The site of the PBS documentary "Lost in the Grand Canyon," features the story of John Wesley Powell and his famed trip down the Colorado River.

Discusses the habitats in the Sonoran Desert region and the subdivisions of the Sonoran Desert (Lower Colorado River Valley, Arizona Upland, Plains of the Sonora, Central Gulf Coast, Vizcaino, Magdalena, and foothills of Sonora)....

A lab experiment in a series of experiments that explores droughts. This experiment is presented as a case study for the drought conditions in the Colorado River. With this case study, students study the decrease of fresh water...

Find statistics about the many river systems of the world. Includes facts such as length, drainage area, cities, notable tributaries, and more. Also provides links to sites about some of the rivers.

Interactive photo search of the collection of 35,000 fossiliferous rocks found within the Green River Formation of Colorado and Utah.

Come and check out this educational resource featuring the Colorado River Toad. The content of this site includes information on this species' characteristics, range, habitat, diet, reproduction, and behavior.

A fascinating look at the building of the irrigation tunnel that brought water into the arid Uncompahgre Valley in Colorado. President Theodore Roosevelt's interest in conservation and his interest in the National Reclamation Act of 1902...

Informative site that tells about the act that authorized the building of the Hoover Dam. Read the complete text of the Boulder Canyon Project here.

The Hoover Dame was viewed as an engineering feat, in the 1930s. This documentary examines the construction and engineering problems that occurred and the questions that arose about the economic and environmental impact this project...

In this lesson plan, 11th graders look at what happened to the Japanese who were living in the United States during World War II and examine their experiences of internment. They will also consider the constitutionality of removing some...

A map from 1911 of Colorado showing the State capital of Denver, counties and county seats, major cities and towns, railroads, the Rockies and other mountain systems, lakes, and rivers. A grid reference in the margins of the map lists...

A map from 1920 of Colorado showing the State capital of Denver, counties and county seats, major cities and towns, railroads, the Rockies and other mountain systems, lakes, and rivers. A grid reference in the margins of the map lists...

A map from 1914 of Colorado showing the State capital of Denver, counties and county seats, major cities and towns, railroads, the Rockies and other mountain systems, lakes, and rivers. A grid reference in the left margin of the map...

A map from 1906 of Colorado showing the State capital of Denver, major cities and towns, railroads, the Rockies and other mountain systems, lakes, and rivers.

A map from 1909 of Colorado showing the State capital of Denver, major cities and towns, railroads, the Rockies and other mountain systems, lakes, and rivers.

A map from 1919 of Colorado showing the State capital of Denver, major cities and towns, railroads, the Rockies and other mountain systems, lakes, and rivers.

A map from 1892 of Colorado showing the State capital of Denver, counties and county seats, major cities and towns, railroads, mountain systems, lakes, and rivers.

A map from 1902 of Colorado showing the State capital of Denver, counties, major cities and towns, railroads, the Rockies and other mountain systems, lakes, and rivers.

A map from 1920 of Colorado showing the State capital of Denver, counties and county seats, major cities and towns, railroads, the Rockies and other mountain systems, lakes, and rivers.

A map from 1920 of Colorado showing the State capital of Denver, counties and county seats, major cities and towns, railroads, the Rockies and other mountain systems, lakes, and rivers.

This page details Coronado's expedition, the discovery of the Grand Canyon and the search for Quivira. Click on the map for a closer look at Coronado's Expedition.