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Clay Flats Knoll




Plate 35. CLAY FLATS KNOLL: 1912 - 1996 This view shows the area to the southeast of Hilgard Mountain and Johns Peak. Pinyon (Pinus edulis) in the foreground has increased, as has the pinyon and juniper (Juniperus sp.) throughout most of the 1912 photograph. Grasslands and open areas have declined since 1912, as would be expected in the absence of fire. Many of these changes have been dramatic. Utah Highway 72 is visible in the 1996 photo as well as a few pinyon-juniper chainings. Other conifer species appear to have increased at the base of Mount Hilgard. It is difficult to determine whether aspen (Populus tremuloides) communities in this view have changed because the aspen were leafless when the 19123 photo was taken in the early spring. This photo, together with plates 33 and 34, forms a panorama from south to northwest.

Photo Information:

1912 photo taken by Lupton; 1996 photo is Kay #4064-24, taken on Sept, 20. Lupton’s photo held by U.S. Geological Survey Photographic Archives, Denver, CO. According to UTM, the section should be 33 rather than 3 for Plates 33-35.

Vegetative Community:

Sagebrush, Pinyon, Juniper, Dry Meadow, Aspen, Conifer


South Central: Hilgard Mountain, T24S, R5E., Sect. 33, UTM 4280300 N, 468300 E; elevation 8,055 ft.; view to west-northwest.

January 2018