cuda-natury: Colorado River

Evidence: 100 • authority: 72

The Colorado River (Spanish: Río Colorado) is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and in northern Mexico. The 1,450-mile-long (2,330 km) river, the Fifth-longest in the United States, drains an expansive, arid watershed that encompasses parts of seven U.S. states and two Mexican states. The name Colorado derives from the Spanish language for "colored reddish" due to its heavy silt load. Starting in the Rocky Mountains of Colorado, it flows generally southwest across the Colorado Plateau and through the Grand Canyon before reaching Lake Mead on the Arizona–Nevada border, where it turns south toward the international border. After entering…

Evidence: 29 • authority: 88

Bird Conservation Along the Lower Colorado River. Riparian corridors in the southwestern deserts are among the most threatened bird habitat types in the United States of America. In the early 1900s, dams were built along the length of the lower Colorado River, the primary water source for the Southwest, to meet the increasing water needs of a rapidly growing human population. These changes altered annual flood regimes and disconnected the river from its historic floodplain, which dramatically reduced riparian corridors and affected the organisms that inhabit them. In this case study, we present an overview of efforts to conserve riparian birds, restore their habitat, and monitor their popul…

Evidence: 29 • authority: 80

Ten Years of Stochastic Water Supply Modeling by Lower Colorado River Authority of Texas

Evidence: 29 • authority: 72

The Gila River ( HEE-lə; O'odham: Keli Akimel or simply Akimel, Quechan: Haa Siʼil, Maricopa: Xiil) is a 649-mile-long (1,044 km) tributary of the Colorado River flowing through New Mexico and Arizona in the United States. The river drains an arid watershed of nearly 60,000 square miles (160,000 km2) that lies mostly within the U.S., but also extends into northern Sonora, Mexico. Indigenous peoples have lived along the river for at least 2,000 years, establishing complex agricultural societies before European exploration of the region began in the 16th century. European Americans did not permanently settle the Gila River watershed until the mid-19th century. During the 20th century, develop…

Evidence: 27 • authority: 72

The Arkansas River is a major tributary of the Mississippi River. It generally flows to the east and southeast as it traverses the U.S. states of Colorado, Kansas, Oklahoma, and Arkansas. The river's source basin lies in Colorado, specifically the Arkansas River Valley. The headwaters derive from the snowpack in the Sawatch and Mosquito mountain ranges. It flows east into Kansas and finally through Oklahoma and Arkansas, where it meets the Mississippi River. At 1,469 miles (2,364 km), it is the sixth-longest river in the United States, the second-longest tributary in the Mississippi–Missouri system, and the 47th longest river in the world. Its origin is in the Rocky Mountains in Lake County…

Evidence: 22 • authority: 72

The Missouri River is a river in the Central and Mountain West regions of the United States. The nation's longest, it rises in the eastern Centennial Mountains of the Bitterroot Range of the Rocky Mountains of southwestern Montana, then flows east and south for 2,341 mi (3,767 km) before entering the Mississippi River north of St. Louis, Missouri. The river drains a semi-arid watershed of more than 500,000 sq mi (1,300,000 km2), which includes parts of ten U.S. states and two Canadian provinces. Although a tributary of the Mississippi, the Missouri River is slightly longer and carries a comparable volume of water. A fellow tributary, the Ohio River, carries more water. When combined with th…

Evidence: 21 • authority: 80

A Recent History of the Lower Colorado River

Evidence: 21 • authority: 80

Finding Birds in the Lower Colorado River Valley

Evidence: 21 • authority: 72

Steamboats on the Colorado River operated from the river mouth at the Colorado River Delta on the Gulf of California in Mexico, up to the Virgin River on the Lower Colorado River Valley in the Southwestern United States from 1852 until 1909, when the construction of the Laguna Dam was completed. The shallow draft paddle steamers were found to be the most economical way to ship goods between the Pacific Ocean ports and settlements and mines along the lower river, putting in at landings in Sonora state, Baja California Territory, California state, Arizona Territory, New Mexico Territory, and Nevada state. They remained the primary means of transportation of freight until the advent of the mor…

Evidence: 21 • authority: 72

The Colorado River is a major river of the western United States and northwest Mexico in North America. Its source is La Poudre Pass Lake. Located in the Rocky Mountains of north-central Colorado, it flows southwest through the Colorado Plateau country of western Colorado, southeastern Utah, and northwestern Arizona, where it flows through the Grand Canyon. It turns south near Las Vegas, Nevada, forming the Arizona–Nevada border in Lake Mead and the Arizona–California border a few miles below Davis Dam between Laughlin, Nevada and Needles, California, before entering Mexico in the Colorado Desert. Most of its waters are diverted into the Imperial Valley of Southern California. In Mexico, it…

Evidence: — • authority: 72

The Sacramento River (Spanish: Río Sacramento) is the principal river of Northern California in the United States and is the largest river in California. Rising in the Klamath Mountains, the river flows south for 400 miles (640 km) before reaching the Sacramento–San Joaquin River Delta and San Francisco Bay. The river drains about 26,500 square miles (69,000 km2) in 19 California counties, mostly within the fertile agricultural region bounded by the Coast Ranges and Sierra Nevada known as the Sacramento Valley, but also extending as far as the volcanic plateaus of Northeastern California. Historically, its watershed has reached as far north as south-central Oregon where the now, primarily,…

Evidence: — • authority: 72

The San Juan River is a major tributary of the Colorado River in the Southwestern United States, providing the chief drainage for the Four Corners region of Colorado, New Mexico, Utah, and Arizona. Originating as snowmelt in the San Juan Mountains (part of the Rocky Mountains) of Colorado, it flows 383 miles (616 km) through the deserts of northern New Mexico and southeastern Utah to join the Colorado River at Glen Canyon. The river drains a high, arid region of the Colorado Plateau. Along its length, it is often the only significant source of fresh water for many miles. The San Juan is also one of the muddiest rivers in North America, carrying an average of 25 million US tons (22.6 million…