9521

• UCREFRP Catalog Number: 9521
• Author: Liebermann, T. D., D. K. Mueller, J. E. Kircher and A. F. Choquette.
• Title: Characteristics and Trends of Streamflow and Dissolved Solids in the Upper Colorado River Basin, Arizona, Colorado, New Mexico, Utah, and Wyoming.
• USFW Year: 1989.
• USFW - Doc Type: Denver.
• Copyright Material: NO

800
600
400
200
0
0
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U
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a
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W
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2
1963-83
B
1956-61
--- 1964-83
- - - - - - - - - - - - - - - - - - -
6000
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0
C
1940-83
Q Mean
---- Median
Period of record 1977-83
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3000
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0
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200
100
E 1952-83
I I I ; I I I I I I I
0
150
100
50
F 1928-61
---- 1964-83
OCT NOV DEC JAN FEB MAR APR MAY JUNE JULY AUG SEPT
Figure 22. Mean daily streamflow at selected sites in San Juan subregion of San Juan region. A, Site 60,
Vallecito Creek near Bayfield, Colo. 8, Site 61, San Juan River near Archuleta, N. Mex. C, Site 62, Animas
River at Farmington, N. Mex. D, Site 64, Chaco River near Waterflow, N. Mex. E, Site 67, McElmo Creek
near Colorado-Utah State line. F, Site 68, San Juan River near Bluff, Utah.
0
10,000
7500
5000
2500
0
October through March. Although dissolved-solids concen-
tration during base flow averages about 1,800 mg/L, the large
volume of snowmelt runoff decreases the average flow-
weighted dissolved-solids concentration to 666 mg/L (table
9). Sulfate makes up 60 percent of the dissolved-solids load.
McElmo Creek near Colorado-Utah State line (site 67)
Site 67 (table 3, pl. 1) is downstream from about 33,000
acres of irrigated agriculture. McElmo Creek drains most
of the Montezuma Valley irrigation area, which uses water
San Juan Subregion 53