The Trigo Mountains are a north-south trending mountain range in La Paz County,

Arizona Arizona is a U.S. state, state in the Southwestern United States, Southwestern region of the United States, sharing the Four Corners region of the western United States with Colorado, New Mexico, and Utah. It also borders Nevada to the nort ...

, bordering the

Colorado River The Colorado River () is one of the principal rivers (along with the Rio Grande) in the Southwestern United States and in northern Mexico. The river, the List of longest rivers of the United States (by main stem), 5th longest in the United St ...

on the east in the

Lower Colorado River Valley The Lower Colorado River Valley (LCRV) is the river region of the lower Colorado River of the southwestern United States in North America that rises in the Rocky Mountains and has its outlet at the Colorado River Delta in the northern Gulf of ...

. The range lies north of the Colorado River as it turns east, north of Martinez Lake and the

Imperial Reservoir The Imperial Reservoir is an lake, artificial lake formed by the construction of the Imperial Diversion Dam across the Colorado River in the Lower Colorado River Valley of Imperial County, California, and Yuma County, Arizona. It is northeast ...

. The Trigo Mountains are on a north-south stretch of the Colorado River, and form the eastern perimeter of the Imperial National Wildlife Refuge. Parts of the Trigo Mountains are included in the Trigo Mountains Wilderness and the

Yuma Proving Ground Yuma Proving Ground (YPG) is a United States Army series of environmentally specific test centers with its Yuma Test Center (YTC) being one of the largest military installations in the world. It is subordinate to the U.S. Army Test and Evalua ...

Specifics of the range

The Trigo Mountains are north-south trending with the northern and central range arcing to the northeast. The curving range parallels the similar-(half the size) curving range to the southeast, the

Chocolate Mountains The Chocolate Mountains of California are located in Imperial and Riverside counties in the Colorado Desert of Southern California. The mountains stretch more than 60 miles (100 km) in a northwest to southeast direction, and are located ...

, and the arc-curving ranges would be presumed to be a resultant of the same time-framed thrust-faulting event during the formation of the

Basin and Range Province The Basin and Range Province is a vast United States physiographic region, physiographic region covering much of the inland Western United States and Northern Mexico, northwestern Mexico. It is defined by unique basin and range topography, charac ...

. The highest peak of the Trigos is Mohave Peak at in the southeast, isolated from the main trend of the range. The largest peak that terminates the mountain range in the north is unnamed, at as part of the North Trigo Peaks.

Access

Access from the south is made at the Colorado River at Martinez Lake, and then a 4-wheel drive dirt road to the ''Red Cloud Mine''. Access to the northern regions is more general, by way of the valley containing the

Colorado River Indian Reservation The Colorado River Indian Tribes (, ) is a federally recognized tribe consisting of the four distinct ethnic groups associated with the Colorado River Indian Reservation: the Mohave, Chemehuevi, Hopi, and Navajo. The tribe has about 4,277 enrolle ...

on the east bank of the river in Arizona. Blythe, California is northwest of the northern ranges; Yuma, Arizona- Winterhaven, California are about south of the central range.

References

{{Mountains of Arizona Mountain ranges of the Sonoran Desert Mountain ranges of the Lower Colorado River Valley Mountain ranges of La Paz County, Arizona Mountain ranges of Arizona

Specifics of the range

Access

See also

References