WSP11764

• File Number: 8273.100
• Description: Colorado River Basin Salinity Control - Federal Agencies - Bureau of Reclamation
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 1/1/1984
• Author: BOR
• Title: Water Quality of the Colorado River System - Historical Trends in Concentration/ Load/ and Mass Fraction of Inorganic Solutes
• Water Supply Pro - Doc Type: Report/Study

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Table 3. -Identification of stations, seasons, and solutes where solute concentration (C) or load (L) is
relatively independent of streamflow - Continued

Period

Season

Calcium Magnesium Sodium

Sum of
Sulfate Bicarbonate six ions

Chloride

San Rafael River near Green River, Utah

1947-65 Dec.-Mar.
May-Jun.
Aug.-Nov.

C
C
C

C

C

C

C

C

C

San Juan Basin

San Juan River near Bluff, Utah

1929-40 Dec.-Mar.
May-Jun.
Aug.-Nov.

C

C
C
C

C

C

C
C
C

C
C

San Juan River near Bluff, Utah

1929-61 Dec.-Mar.
May-Jun.
Aug.-Nov.

C
C
C

C

C
C

Lower Colorado Basin

Colorado River at Lees Ferry, Arizona

1927-41 Dec.-Mar.
May-Jun.
Aug.-Nov.

C

C

C

C

C
C

C

Colorado River at Lees Ferry, Arizona

1927-61 Dec.-Mar.
May-Jun.
Aug.-Nov.

C
C
C

C

Colorado River near Grand Canyon, Arizona

1925-41 Dec.-Mar.
May-Jun.
Aug.-Nov.

C
C
C

C

Colorado River near Grand Canyon, Arizona

1925-61 Dec.-Mar.
May-Jun.
Aug.-Nov.

C

C
C
C

C

In the power equation:
Cm = b1Qmb2

the solute concentration is identified as being relatively independent of streamflow when the estimated
value of b2 is greater than -0,20 and the weighted RMS error is less than 0.50. For solute load,
independence is identified for values of b2 less than -0.80.

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