Rio Grande

The Rio Grande is a very big river.

It starts in the mountains of Colorado. Then it flows south through dry lands. It moves through New Mexico and Texas.

The river helps many farms grow food. It also gives water to big cities. The river marks the border between two lands. It flows all the way to the sea.

It is a very special place to see.

The Rio Grande is a very long river.

It is the fourth longest river in North America. The river starts in the mountains of Colorado. It flows south through dry lands. It passes through New Mexico and Texas.

Later, the river becomes a border. It sits between the United States and Mexico. It separates Texas from Mexican states like Chihuahua.

The river is a vital water source. It helps farms grow food in dry areas. It also gives water to big cities. Cities like Albuquerque and El Paso use its water.

Much of the river flows through desert lands. The river ends at the Gulf of Mexico. It meets the sea at a sandy delta. People must work hard to protect the river. They want to keep the water and the plants safe. Many people live near the river in its fertile valley.

The Rio Grande is a very important river in North America.

It is the fourth longest river in the United States. People in Mexico call it the Río Bravo del Norte. Some Navajo people call it Tó Ba'áadi. The river flows through very dry and hot lands. It provides a vital water source for many people. It helps seven different states in the U.S. and Mexico.

Without this water, the desert lands would be much harder to live in.

The river has a long and winding journey. It begins in the mountains of south-central Colorado. It starts when several small streams join near Canby Mountain.

From there, it flows through the San Luis Valley. It moves south into the state of New Mexico. The river cuts through a deep area called the Rio Grande Gorge. It also collects water from other sources like the Rio Chama. Eventually, the river flows into the sandy delta of the Gulf of Mexico.

Many different groups of people have lived by the river for a long time. Very early humans lived in the valley thousands of years ago. The Ancestral Puebloan culture lived here too. When there was a big drought, they moved to the fertile river valleys. They lived alongside other groups like the Apache. Later, Spanish explorers arrived in the 1500s. In 1598, a man named Don Juan de Oñate established a colony near the river.

This history shows how the river has always been a place for people.

There are many interesting facts about the river's size and use. The river forms a border between the United States and Mexico. It sits between Texas and the Mexican states of Chihuahua, Coahuila, Nuevo León, and Tamaulipas.

Because people use so much water for farms and cities, only 20 percent reaches the sea. Large cities like Albuquerque and El Paso rely on it. The river is also home to a special ecosystem called a bosque. This is a group of trees and plants on the river's flood plain.

The river has also been a path for travel and trade. In the 1800s, over 200 steamboats worked on the river. These boats carried people and goods. During the Mexican-American War in 1846, the U.S. government used steamboats to move the army.

Today, people use bridges to cross the river instead of boats. Some bridges carry cars, and some carry trains. One new rail bridge was opened in 2015.

The river continues to connect different lands and people every day.

The Rio Grande is a major river in North America. It is the fourth longest river in the United States by its main stem. In Mexico, people call it the Río Bravo (del Norte). The Navajo people call it Tó Ba'áadi. This river is a vital water source for seven states across the United States and Mexico. It flows primarily through arid and semi-arid lands. These are regions that are very dry and receive little rain.

The river begins its journey in south-central Colorado. It rises in the western part of the Rio Grande National Forest. Several streams join together at the base of Canby Mountain. This occurs in the San Juan Mountains, east of the Continental Divide. From the divide, the water flows through the San Luis Valley. It then travels south into New Mexico. The river passes through the Rio Grande Gorge near Taos.

As the river moves south, it collects more water. It receives water from the Rio Chama. It also gets water from the Colorado River basin via the San Juan-Chama Diversion Project. The river flows through the Rio Grande rift. This is a geological feature where the land has pulled apart. The river cuts canyons between sediment-filled basins. It supports a fragile bosque ecosystem on its flood plain. A bosque is a forest found along a river in a dry area.

The Rio Grande has a very long history. Millions of years ago, the river system was different. The basins were initially bolsons. These are depressions with no external drainage. An axial river existed in the Espanola Basin 13 million years ago. Eventually, the river integrated different basins to the south. About 800,000 years ago, it joined the Pecos River. Much later, the river reached the Gulf of Mexico.

Humans have lived near the river for thousands of years. Early groups like the Folsom and Clovis cultures left sites in the valley. Later, the Oshara tradition began cultivating maize around 1750 BCE. Around 1130 CE, a drought caused the Ancestral Puebloan culture to collapse. Many people migrated to the fertile Rio Grande valleys. They lived alongside other groups like the Apache. Spanish explorers arrived in the 1500s. In 1598, Don Juan de Oñate established the colony of Santa Fe de Nuevo Méjico.

The river serves as an international border today. It separates the U.S. state of Texas from several Mexican states. These include Chihuahua, Coahuila, Nuevo León, and Tamaulipas. It also forms a partial boundary between New Mexico and Texas. Because of human needs, the river's flow is heavily managed. People use water for irrigation in the Mesilla and Lower Rio Grande Valleys. Cities like Albuquerque and Las Cruces also use the water. Consequently, only 20 percent of the water reaches the Gulf of Mexico.

Transportation on the river has changed significantly over time. In the 19th century, over 200 steamboats operated on the river. They moved between the mouth near Brownsville and Rio Grande City. During the Mexican-American War in 1846, the U.S. Army used steamboats for transport. Today, the river is generally not navigable for large cargo barges. Navigation is mostly only possible near the mouth. Instead, people use bridges to cross the water. A new international rail crossing opened in August 2015.