Page 25

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Title Is Utah Sahara Bound?
Subject Agriculture--Utah; Land use--Utah
Description The 11th Annual Frederick William Reynolds Lecture.
Creator Cottam, Walter Pace, 1894-
Publisher Extension Division, University of Utah
Date 1947-02-19
Date Digital 2008-05-29
Type Text
Format image/jpeg
Digitization Specifications Original scanned on Epson Expression 10000XL flatbed scanner and saved as 400 ppi uncompressed tiff. Display images generated in PhotoshopCS and uploaded into CONTENTdm Aquisition Station.
Resource Identifier,458
Source LD5526 .U8 n.s. v.37 no.11
Language eng
Relation Digital reproduction of "Is Utah Sahara Bound?," J. Willard Marriott Library Special Collections
Rights Digital Image Copyright University of Utah
Metadata Cataloger Seungkeol Choe; Ken Rockwell
ARK ark:/87278/s6w66hr0
Setname uu_fwrl
Date Created 2008-07-29
Date Modified 2009-03-13
ID 319731
Reference URL

Page Metadata

Title Page 25
Description VEGETATION, SOIL AND WATER 25 Uinta and Duchesne The extreme condition of erosion on the north Oquirrhs caused by the destruction of vegetation due to smelter fumes fortunately has no counterpart in Utah. The accelerated erosion caused by forage depletion on the Sevier River drainage, however, represents a condition widspread throughout Utah. A recent report29 on range conditions in the Uinta Basin representing a study of nearly 5,000,000 acres of land has this to say: "The survey made clear that the effects of overuse during a long period of time, accentuated by recent drought conditions, has brought much of the range land of Duchesne and Uinta Counties to an advanced state of erosion. "Studies on spring-fall and winter range lands outside the national forests and Indian lands indicate that erosion is accelerated on all but 2 percent of the land, and that on more than 10 percent of this land is so excessive that it is doubtful whether the land can economically be returned to its former productivity. Erosion has been classified as "advanced" on more than 60 percent of the spring-fall and winter range and probably will become submarginal in a few years. More than 95 percent of the spring-fall and winter range land is subject to varying degrees of accelerated sheet erosion, while three-fourths of the area is in an advanced stage of gully erosion. About one-half of it is being further damaged by wind erosion. "An example of erosion losses in the Uinta Basin is indicated by the data regarding run-off and erosion as a result of heavy rains falling on September 3, 1936. "Water volume and silt and organic matter content were measured in the Duchesne River at Myton Bridge. An area of approximately one million acres is drained by the river above this point. Most of this area received some rainfall, but the flood waters originated from a small part of the total area. At 2 P. M. September 3, 2,330 cubic feet of water was passing under the bridge each second, and this water carried 6.7 percent by weight of silt, which silt averaged 2.6 percent organic matter. At this rate, 193 acre-feet of water was passing down Duchesne River in only one hour and being lost forever to this region, already limited in productivity because of water shortage. Also, over 17,500 tons of solid material, principally silt and clayâ€"enough to cover an acre of land 10 feet deepâ€"containing almost 500 tons of organic matter, would pass down the river each hour. Organic matter, the most valuable constituent of the soil for erosion control and crop production, was being lost at the rate of 7^ tons a minute. Ages, not weeks, nor months, would be required for nature to restore this soil and organic matter. "Additional erosion observations indicate the severity of damage done by erosion in other parts of the basin. For example, on August 24, 1936, a tributary of the Strawberry River was found to have 1.7 pounds of solid particles in each ten gallons of water. This tributary is reported to have once been one of the finest trout-fishing creeks
Format image/jpeg
Identifier 025-RNLT-CottamWP_Page 25.jpg
Source Original Manuscript: Is Utah Sahara Bound? by Walter P. Cottam.
Setname uu_fwrl
Date Created 2008-07-29
Date Modified 2008-07-29
ID 319714
Reference URL