Upstream view of the lower Colorado River floodplain. Lake Havasu can be seen in the upper center-left of the image.
Mouth of Topock Gorge
Bouse and Bullhead near Parker, AZ
Spectacular section of the Bouse formation with interbedded and overlying fluvial gravels of the Bullhead alluvium. Section along the flank of Mesquite Mountain, AZ.
Big Boulder in the Pyramid Gravel
The Pyramid gravel is the unit that records the first arrival of water from the Colorado River into Mohave Valley. This is the largest of many boulders related to the flood of water from the lake upstream in Cottonwood Valley.
Lake Mohave, AZ and NV
A beautiful lake above Davis Dam. Its surface is more than 1000' lower than that of the lake that filled this valley during the birth of the lower Colorado River.
Pyramid Gravel, Laughlin, Nevdada
Nice exposure of the Pyramid gravel astride the modern Colorado River just south of Laughlin, Nevada. This unit of boulder-conglomerate is more that 30 m thick in the bluffs along the river facing Bullhead City, AZ.
The Golden Section
Key stratigraphic section in the history of the origin and evolution of the lower Colorado River. This section is just south of the Harrah's Casino in Laughlin, NV. It documents the origin of the river in this reach as the consequence of cascading lake-spillover.
Colorado River in Black Canyon, Arizona and Nevada