Browse Items (132 total)

View of the border fence and Monument No. 121, near the port-of-entry at the twin towns of Nogales, Sonora and Arizona. Mexico is on the left.

View of the border fence near Monument 108, looking west. Vegetation lines both sides on the fence, and on the left, trees are visible.

[Note: Revised for appropriate name of the Tohono O’odham Nation]: The border line divides the Baboquivari Mountains and cuts through the Tohono O’odham Nation. Many washes and arroyos, such as the Gu Oidak, San Simon, and Altar, intersect the…

A single road leads towards a large hill. Small shrubs line both sides of the road.

A dirt road stands between the border wall and a chain link fence outside El Paso. In the distance, a Ferris wheel documents the festivities in town.

During President Carter's administration, the Immigration and Naturalization Service constructed an "impenetrable" fence at selected areas near El Paso, Calexico, and San Ysidro, among others. It is twelve feet high and constructed of metal webbing…

Originally, treaties between Mexico and the United States provided for mutual navigation rights along the Rio Grande. Now, the river water is used primarily for domestic purposes and irrigation. As a result of the United States-Mexico water treaty of…

Blackened plants indicative of fire damage and a wire fence marking the border between Sonora and Arizona.

View of a burned mesquite along the Arizona/Sonora border.

Three main cultural factors influence the flow and course of the Rio Grande. The first is the large and growing agricultural network, including diversion dams, reservoirs, and irrigation canals. The second is the development of urban water and power…

As with many borders, conflicts arise. Ownership of the El Chamizal tract, consisting of 630 acres of disputed land between El Paso and Ciudad Juarez, remained in dispute for nearly a hundred years. The issue involved the interpretation of how fast…

View of the abandoned Presumido store and water tank at the base of a hill. In the foreground, a lone saguaro is visible.

River ramp leading to the Rio Grande near Brownsville. Vegetation lines both sides of the ramp, while trees are visible on the other side of the river.

View of the water in the All-American Canal. To the left, an irrigation structure known as a "drop" rises above the water.

Dry rescaca (oxbow lake) with sparse vegetation.

On the side of a road, an old boating sign that reads "ENJOY SAFE BOATING" is hidden behind overgrown plants.

View of trees on the sloping side of a hill. Beyond the trees, a dirt path is visible.

Fence and dirt road surrounded by vegetation. In the background, the International Bridge at Roma-Los Saenz is visible.

View of a fence with a "No Trespassing" sign alongside a dirt road. The fence is part of the Phelps Dodge Mining Facility.

A fence cuts across a ridge. On both sides, trees and vegetation populate the landscape.