OCR Text |
Show o "Great Basin" Region. What is known as the Qrcut Basin of North America Is an Inland drain ago in western United States, situ ated between Wahsatch mountains oi the cost and tho Slerro Nevada and Cascade ranges on the west. It com prises most of Nevada and portion of Utah, Oregon, Idaho and Cullfor nln, and has a total area of about 210,000 square miles. The basin bo a graded slope from the north, where tho elovatlon p 4,000 feet nbovo the sea. toward the south, forming n tilt ed plntenu whose surface Is broken by interrupted groups of' mountulni with a general north and south trend |