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About Marsh Valley

Marsh Valley lies in the mountains of southwestern Idaho at the heart of Bannock County. It is a rural valley of serene beauty and surrounded by ridges of the Rocky Mountains. Marsh Creek flows the length of the valley along its western side and the Portneuf River flows in on the eastern side and flows north along that side of the valley until the two meet at the north end of the valley. Between the two lies an ancient lava flow which protrudes from the vegetation in black cliffs. Old Tom Mountain and its companion, Scout Mountain forms the wall of the valley at the northwest side and the Portneuf Mountains line it on the northeast side. Elkhorn Mountain and Oxford Mountain stand at the south end of the valley. At the north end of the valley, the Portneuf River makes a bend to the west and passes through the Portneuf Gap, leading to Pocatello and the Snake River Basin.

Marsh Valley is an important avenue of travel through this corner of Idaho and always has been, providing a natural pass through the surrounding mountains. The Oregon Trail passed through the valley following the Portneuf River and using the Portneuf Gap. The first railroad in Idaho passed through Marsh Valley, extending northward from Utah. Today Interstate 15 traverses the valley north to south and U.S. Highway 30 crosses it, following the route of the Oregon Trail. U.S. Highway 91 shares an alignment with I-15 today, but before the freeway was the main route of travel for the towns of the valley, and its old alignments can still be travelled today.

The elevation of Marsh Valley is about 4,600 feet and the surrounding mountains reach to around 9,000 feet. The rural towns of Inkom, McCammon, Arimo and Downey are found here, along with acres of ranchland and scattered farmhouses.


Street Index


450 North Street
a dirt road
a road
Airport Road
Arimo Road
Arkansas Road
Aslett Road
Back Downata Road
Big Hollow Road
Bloxham Road
Bonneville Road
Bowman Road
Bright Road
Brush Creek Road
Calvin Road
Cambridge Road
Cement Road
Center Street
Cherry Creek Road
Chicken Flats Road
Criddle Road
Cunningham Road
Curtis Lane
Curtis Road
Dewey Lane
Dixon Road
Downata Road
East Sublette Road
Elison Road
Ford Road
Gittins Road
Glover Road
Glover Street
Goodenough Road
Grant Road
Green Road
Guidinger Road
Hall Road
Hall Street
Harkness Canyon Road
Hawkins Road
I-15
Inkom Road
Interstate 15
Jensen Road
Jinkens Road
Kissel Road
Left Hand Marsh Creek Road
Lish Road
Lone Pine Road
Lower Rock Creek Road
Lundgren Road
Main Street
Malad Highway
Marsh Creek Road
Marsh Valley Road
Max Road
McDaniels Road
Meadowbrook Ranch Road
Merril Extension Road
Merrill Road
Mines Canyon
Mullen Canyon Road
Nester Road
Old Highway 91
Old Tom Mountain
Oxford Highway
Philips Road
Phillips Road
Portneuf Road
Pratt Road
Price Ext
Price Road
Raymond Road
Red Rock Road
Reese Creek Road
Richards Road
Robbers Roost Road
Robin Road
Salveson Road
Shrives Road
Simpson Road
Smith Canyon Road
Stewart Road
Terrell Road
Thacker Road
Tillotson Road
Treasure Lane
U.S. Highway 30
U.S. Highway 91
Upper Rock Creek Road
Virginia Road
Wagner Canyon Road
Walker Creek Road
Ware Road
West Glover Street
West Sublette Road
Woodland Road

In Marsh Valley:

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