The Amargosa River is an intermittent waterway, 185 miles (298 km) long, in southern Nevada and eastern California in the United States.

[8] The river arises at about 3,900 feet (1,200 m) above sea level in Nye County, Nevada, along the southern side of Pahute Mesa in the Nellis Air Force Range.

Shortly after that, it passes the town of Amargosa Valley on the left, leaves Nevada, and enters Inyo County, California.

Turning west, the river crosses under Route 127 and enters Death Valley National Park between the south end of the Amargosa Range on the right and the Avawatz Mountains on the left.

[9] The river receives Willow Creek from the right and ends in Badwater Basin, about 282 feet (86 m) below sea level,[3] between the Black Mountains on the right and the Panamint Range on the left.

[11] The United States Geological Survey monitors the flow of the Amargosa River at a gauge station near the Old Spanish Trail Road, 0.2 miles (0.3 km) west of Tecopa.

Among these endangered species are the Amargosa vole, Least Bell's Vireo, and Southwestern Willow Flycatcher, recognized at both state and federal levels.

[13]They primarily reproduce in loose groups, with males displaying minimal aggression and frequently engaging in courtship behavior towards females.

This suggests that during significant flood events, speckled dace are capable of traversing considerable distances along the Amargosa River, covering nearly 100 miles from Beatty to below Tecopa.

[13] The Amargosa River is home to several crucial conservation areas, highlighting a diverse array of habitats like dunes, mesquite forests, springs, marshes, and riverbanks, all interconnected across the expansive watershed.

Stretching nearly 3 million acres along the California-Nevada border, this region faces threats from urban development, recreation, and invasive species.

They also strive to maintain healthy populations of native fish, including Pupfish, Speckled dace, and Amargosa Toads.