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

Table 2. - Root-mean-square errors (weighted by em-2) of two equations describing the concentration-streamflow
relationship - Continued

......
o
o
coon

Period

Calcium

Magnesium

Sodium

Sulfate

Sum of
six ions

Season

Chloride

Bicarbonate

1947-65

San Rafael River near Green River, Utah

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

0.105/ 0.136/ 0.150/ 0.136/0.161 0.134/0.1480.146/ 0.115/
0.134/0.237 0.159/0.291 0.216/0.2890.183/0.286 0.191/0.280 0.060/0.062 0.152/0.263
0.175/0.2020.320/0.308 0.423/0.436 0.251/0.291 0.208/0.2180.204/0.2000.194/0.203

1929-40

San Juan River near Bluff, Utah

San Juan Basin

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

0.073/0.101 0.108/0.1280.153/0.1650.137/0.156 0.116/0.138 0.070/0.075 0.088/0.110
0.100/0.1200.139/0.141 0.208/0.247 0.324/0.143 0.150/0.182 0.098/0.103 0.107/0.138
0.149/0.185 0.186/0.213 0.259/0.301 0.167/0.213 0.211/0.255 0.125/0.131 0.17'7/0.218

1929-61

San Juan River near Bluff, Utah

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

0.078/0.104 0.129/0.139 0.155/0.175 0.172/0.183 0.110/0.132 0.073/0.076 0.090/0.114
0.136/0.157 0.219/0.232 0.210/0.236 0.192/0.212 0.t75/0.202 0.142/ 0.146/0.172
0.143/0.166 0.232/0.235 0.222/0.264 0.188/0.223 0.189/0.228 0.131/0.130 0.157/0.196

1927-41

Colorado River at Lees Ferry, Arizona

Lower Colorado Basin

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

0.055/0.075 0.036/0.052 0.056/0.074 0.056/0.066 0.052/0.069 0.040/0.055 0.040/0.061
0.028/0.026 0.082/0.094 0.208/0.201 0.051/0.049 0.074/0.064 0.059/0.062 0.059/0.058
0.191/ 0.138/0.151 0.170/0.194 0.145/0.157 0.211/0.222 0.066/0.070 0.165/0.181

1927-61

Colorado River at Lees Ferry, Arizona

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

0.071/0.079 0.124/0.123 0.063/0.068 0.059/0.061 0.079/0.084 0.071/0.073 0.051/0.058
0.129/0.143 0.164/0.179 0.159/0.173 0.144/0.156 0.128/0.147 0.133/0.140 0.105/0.127
0.152/0.164 0.167/0.176 0.152/0.155 0.150/0.149 0.167/0.179 0.096/0.095 0.126/0.142

1925-41

Colorado River near Grand Canyon. Arizona

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

0.063/0.071 0.086/0.086 0.070/0.078 0.064/0.064 0.075/0.080 0.059/0.064 0.057/0.064
0.111/0.1280.127/0.1400.133/0.149 0.104/0.108 0.147/0.166 0.107/0.112 0.106/0.127
0.149/ 0.122/0.155 0.129/0.164 0.088/0.107 0.169/0.200 0.072/0.090 0.126/0.163

1 925-61

Colorado River near Grand Canyon. Arizona

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

0.057/0.0640.100/0.0990.078/0.086 0.144/0.147 0.080/0.084 0.064/0.066 0.056/0.062
0.143/ 0.153/0.166 0.139/0.111 0.098/0.104 0.144/0.164 0.167/0.168 0.125/0.140
0.142/0.153 0.138/0.154 0.129/0.147 0.093/0.105 0.164/0.182 0.098/0. t 00 0.118/0.139

12