The largest of all, Great Salt Lake, is maintained by the waters of the Wasatch and associated plateaus.
The typical Phenacodus primaevus, of the Lower or Wasatch Eocene of North America, was a relatively small ungulate, of slight build, with straight limbs each terminating in five complete toes, and walking in the digitigrade fashion of the modern tapir.
The family is represented in the Lower, or Wasatch, Eocene by Trigonolestes, in the Middle (Bridger) Eocene by Homacodon (Pantolestes), and in the Upper (Uinta) Eocene by Bunomeryx.
The chief provinces of the Cordihleran region are: The Rocky Mountain system and its basins, from northern New Mexico northward, including all the mountains from the front ranges bordering on the plains to the Uinta and Wasatch ranges in Utah; the Pacific ranges including the Sierra Nevada of California, the Cascade range of Oregon and Washington, and the Coast range along the Pacific nearly to the southern end of California; and a great intermediate area, including in the north the Columbian lava plains and in the south the large province of the Basin ranges, which extends into Mexico and widens from the centre southward, so as to meet the Great Plains in eastern New Mexico, and to extend to the Pacific coast in southern California.
The Wasatch stage, when deposition was in progress over much of Utah and western Colorado, parts of Wyoming, and elsewhere.
In the lower, or Wasatch, Eocene the group was represented by the still more primitive Lambdotherium.
The topography of the Great Basin region in Idaho is similar to that of the same region in other states (see Nevada); in Idaho it forms a very small part of the state; its mountains are practically a part of the Wasatch Range of Utah; and the southward drainage of the region (into Great Salt Lake, by Bear river) also separates it from the other parts of the state.
The Wasatch Mountain range constitutes the eastern margin of the Great Basin in central and northern Utah, and resembles the true basin ranges in that it is formed by a great block of the earth's crust uptilted along a north-south fault-line.
At the western base of the Wasatch are Salt Lake City, Ogden, Provo and other smaller towns, situated where streams issue from the mountains, soon to disappear on the desert plains.
Important mining operations are carried on in the Wasatch Mountains and in a number of the basin ranges.
The higher plateaus, the Uinta and Wasatch mountains, bear forests of fir, spruce and pine, and the lower slopes are dotted with piiion, juniper, and scrub cedar.
Willows and cottonwoods grow along streams. The west slope of the Wasatch has been largely denuded of its forests to supply the demands of the towns at its base.
The timber of the Wasatch Range is small and scattering.
This project, which was about one-third completed in the beginning of 1910, provides for the irrigation in Strawberry Valley (Utah and Wasatch counties, S.
(all but 9586 oz., which were from lead zinc ore, being from lead ores) were from Summit and Wasatch counties; 1,561,983 oz.
The beds of magnetite and hematite, in the southern portion of the Wasatch Mountains, are the largest in the western United States; in 1902 the four productive mines in Milford, Juab and Utah counties produced 16,240 tons of ore, valued at $27,417.
Of the Jordan river in the Salt Lake Valley, near the base of the Wasatch mountains, at an altitude of about 4350 ft., about 11 m.