Category archives for Idaho

Evidence for south-oriented drainage in the present day Gallatin, Madison, and Jefferson River drainage basins

Abstract: Multiple deep passes crossing the present-day east-west continental divide and numerous south-oriented tributaries flowing to the present-day north-oriented Gallatin, Madison, Jefferson-Beaverhead-Red Rock, and Missouri Rivers provide evidence the Gallatin, Madison, and Jefferson-Beaverhead-Red Rock valleys originated as diverging channels in a large-scale south-oriented anastomosing channel complex that was subsequently reversed to form the present-day north-oriented Gallatin, […]

Madison River-Henrys Fork drainage divide area landform origins along the continental divide and west of Yellowstone National Park, Montana and Idaho, USA

Abstract: This essay uses topographic map evidence to interpret landform origins along the continental divide between the Madison River and Henrys Fork west of Yellowstone National Park. The Madison River flows in a west and northwest direction from Yellowstone National Park along the north edge of this essay’s study region and then turns to flow […]

Red Rock River-Camas Creek drainage divide area landform origins along the continental divide, Centennial Mountains, Beaverhead County, Montana and Clark County, Idaho, USA

Abstract: This essay uses topographic map evidence to interpret landform origins along the continental divide between the Red Rock River in Beaverhead County, Montana and Camas Creek in Clark County, Idaho. This continental divide segment is located in the Centennial Mountains east of Monida Pass. The Centennial Mountains are a west-to-east oriented mountain range, which […]

Red Rock River-Medicine Lodge Creek (South) drainage divide area landform origins along the continental divide, Beaverhead County, Montana and Clark County, Idaho, USA

Abstract: This essay uses topographic map evidence to interpret landform origins along the continental divide between the Red Rock River in Beaverhead County, Montana and Medicine Lodge Creek in Clark County, Idaho. The continental divide segment investigated in this essay extends from Bannack Pass in the west to Monida Pass in the east and is […]

Medicine Lodge Creek-Lemhi River drainage divide area landform origins along the continental divide, Beaverhead County, Montana and Lemhi County, Idaho, USA

Abstract: This essay uses topographic map evidence to interpret landform origins along the continental divide between Medicine Lodge Creek in Beaverhead County, Montana and the Lemhi River in Lemhi County, Idaho. The continental divide follows the crest of the Beaverhead Mountains. The Lemhi River flows in a north-northwest direction on the west side of the […]

Horse Prairie Creek-Lemhi River drainage divide area landform origins along the continental divide, Beaverhead County, Montana and Lemhi County, Idaho, USA

Abstract: This essay uses topographic map evidence to interpret landform origins along the continental divide between the Horse Prairie Creek drainage basin in Beaverhead County, Montana and the Lemhi River drainage basin in Lemhi County, Idaho. The east-west continental divide in the region is located along the crest of the Beaverhead Mountains and serves as […]

Big Hole River-Lemhi River drainage divide area landform origins along the continental divide, Beaverhead County, Montana and Lemhi County, Idaho, USA

Abstract: This essay uses topographic map evidence to interpret landform origins along the continental divide between the Big Hole River in Beaverhead County, Montana and the Lemhi River in Lemhi County, Idaho. The east-west continental divide in the study region is located along the crest of the Beaverhead Mountains and serves as the state boundary. […]

Big Hole River-Salmon River drainage divide area landform origins along the continental divide, Beaverhead County, Montana and Lemhi County, Idaho, USA

Abstract: This essay uses topographic map evidence to interpret landform origins along the continental divide between the Big Hole River in Beaverhead County, Montana and the Salmon River in Lemhi County, Idaho. The Big Hole River flows in a north direction in Montana on the east side of the Beaverhead Mountains while on the west […]

East Fork Bitterroot River-Big Hole River drainage divide area landform origins, Ravalli and Beaverhead Counties, Montana, USA

Abstract: This essay uses topographic map evidence to interpret landform origins along the continental divide between East Fork Bitterroot River and the Big Hole River in Ravalli and Beaverhead Counties, Montana, which is located in the Anaconda Range. The East Fork Bitterroot River is a west and southwest oriented stream flowing roughly parallel to the […]