What watershed is the Colorado River in?
The Colorado River watershed comprises 39,900 square miles, originating in Dawson County near the New Mexico border in the High Plains. Travis County’s water resources include not only the Colorado River, aquifers, springs, and lakes, but also the creeks, streams, and storm water drainage channels that flow to them.
How large is the Colorado River watershed?
246,000 square miles
The drainage basin or watershed of the Colorado River encompasses 246,000 square miles (640,000 km2) of southwestern North America, making it the seventh largest on the continent. About 238,600 square miles (618,000 km2), or 97 percent of the watershed, is in the United States.
How is the Colorado River water allocated?
Colorado River water was apportioned, with California receiving 4.4 maf, Arizona 2.8 maf and Nevada 300,000 af, with each state also awarded all the water in their tributaries.
Where does 80% of the water in the Colorado River system come from?
The largest of these facilities, completed in 1936, is Hoover Dam, located on the border between Nevada and Arizona. The second largest dam is Glen Canyon Dam, which is in north-central Arizona and began operating in 1964. These two dams provide about 80 percent of the water-storage capacity in the basin.
What is happening in the Colorado River basin?
On average, the Colorado River’s flow has declined by about 20 percent over the last century, according to a 2020 study by U.S. Geological Survey scientists. Over half of that decline can be attributed to warming temperatures across the basin, researchers said.
Is the Colorado River a basin?
The Colorado River Basin, located in the southwestern United States, occupies an area of approximately 250,000 square miles. Although agricultural uses depend on 70 percent of Colorado River water, between 35 and 40 million people rely on the same water for some, if not all, of their municipal needs.
Who controls the Colorado River water?
The Colorado River is managed and operated under numerous compacts, federal laws, court decisions and decrees, contracts, and regulatory guidelines collectively known as the “Law of the River.” This collection of documents apportions the water and regulates the use and management of the Colorado River among the seven …
What is river basin planning and accounting?
The concept of coordinated planning of water resources throughout a river basin dates back to the late nineteenth century. In the 1870s, John Wesley Powell recommended using major river basins as administrative units in the western United States.
What is Colorado River basin?
Where does the Colorado River drain?
From its source high in the Rocky Mountains, the Colorado River channels water south nearly 1,500 miles, over falls, through deserts and canyons, to the lush wetlands of a vast delta in Mexico and into the Gulf of California.
What is the Los Angeles region basin plan?
Water Quality Control Plan: Los Angeles Region Basin Plan for the Coastal Watersheds of Los Angeles and Ventura Counties The Los Angeles Regional Board’s Basin Plan is designed to preserve and enhance water quality and protect the beneficial uses of all regional waters.
What is the approval process for the Basin Plan?
Following adoption by the Regional Board, the Basin Plan and subsequent amendments are subject to approval by the State Board, the State Office of Administrative Law (OAL), and the United States Environmental Protection Agency (USEPA).
When was the 2017-2019 triennial review of water quality standards published?
Notice of 2017-2019 Triennial Review of Water Quality Standards in the Los Angeles Region (November 6, 2017)
How many people use the Colorado River?
The Colorado River provides water to almost 40 million people in two countries, seven states, 29 federally recognized Indian tribes, and 4 million acres of farmland.
