were there any dams built on it?
Yes. Over 29 major dams are built on it
Colorado River
 Over 29 major dams and hundreds of miles of canals serve to supply thirsty cities, provide irrigation water to some 4 million acres (1.6 million hectares), and meet peaking power demands in the Southwest, generating more than 12 billion kWh of hydroelectricity each year. Often called "America's Nile", the Colorado is so carefully managed – with basin reservoirs capable of holding four times the river's annual flow – that each drop of its water is used an average of 17 times in a single year.
where is the colorado river located on the map Southwestern United States and northern Mexico. what is the length of it? UNANSWERABLE where does it begin? La Poudre Pass in the Southern Rocky Mountains of Colorado what are its major branches? Larger branches include the Blue, Eagle and Roaring Fork rivers. what is the highest point of the mountains where it begins? The La Powder Pass the high mountains of Colorado. what is its height? UNANSWERABLE where does the first mentioned water body terminate? The Gulf of California between Baja California and Sonora in Mexico when was the upper part of it named? UNANSWERABLE was it known by any other name before? Rio San Rafael
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Colorado River [SEP] Engineering and development
While first envisioned in the late 19th century, construction on the Colorado-Big Thompson Project (C-BT) did not begin until the 1930s. The C-BT now delivers more than 11 times the Grand Ditch's flow from the Colorado River watershed to cities along the Front Range. Meanwhile, large-scale development was also beginning on the opposite end of the Colorado River. In 1900, entrepreneurs of the California Development Company (CDC) looked to the Imperial Valley of southern California as an excellent location to develop agriculture irrigated by the waters of the river. Engineer George Chaffey was hired to design the Alamo Canal, which split off from the Colorado River near Pilot Knob, curved south into Mexico, and dumped into the Alamo River, a dry arroyo which had historically carried flood flows of the Colorado into the Salton Sink.