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

TZOl

Table 9. - Significant long-term trends in mass fraction ("J6/aj by linear regression

PER rOD

--------------------------------------.-----------------------------------------------.----.----------------_.--

SEASON

OALCIUM

MAGNESIUM

SODIUM

CHLORIDE

SULFATE

BICARBONATE

------------------------------------------------------------------------.--------------------------------------.

UPPER COLORADO BASIN
SurrON 9095500 COLORADO RIVER NEAR CAMEO. co.
1933-45 DEC-MAR .034 .072
MAY-JUNE
AUG-NOV .16t
STATION 9152500 GUNNISON RIVER NEAR GRAND JUNCT
1931-64 DEC-MAR .033 - .010 - .049 -.012 -.056 .090
MAY-JUNE .061 -.022 -.070
AUG-NOV .042 -.064 -.014 -.041 .087
STAHaN 9180000 DOLORES RIVER NEAR CISCO. U1
1951-82 DEe-MAR - .134 .173
MAY-JUNE - .131 .213 .258 -.313
AUG-NOV -.077 -.024 .144 .312 - .432 .099
STATION 9180500 COLORADO RIVER NEAR CISCO UTAH
1928-46 DEC-MAR .222 -.288
MAY-JUNE .069 - .058 -.044 - .387 .444
.., AUG-NOV .058 -.062 .143
0)
GREEN BASIN
STATtON 9217000 GREEN R. NR GREEN RIVER, WYO.
1951-62 DEC-MAR -.066 .086 .044 -.204 .333
MAY-JUNE - .119
AUG-NOV - .065 .071 .058 -.259 .351
STATION 9251000 YAMPA RIVER NEAR MAYBElL. co.
1950-82 DEC-MAR -.045 .039 -.094 .377 -.273
M^Y-JUN~ -.074 .079 .269 .317
AUG-NOV .018 - .033 -.126 .196
STATION 9306500 WHITE RIVER NEAR WATSON, U1
1950-79 DEe-MAR .031 .022 -.107 -.20f .278
MAY-JUNE -.059 .029 -.106 .191
A.UG-NOV .030 -.104 -.226 .246
STATION 9315000 GREEN RIVER AT GREEN RIVER, UTA
1928-61 DEC-MAR -.053 .033 .041
MAY-JUNE -.020 .020
AUG-NQV -.054
STATION 9328500 SAN RAFAEl RIVER NEAR GREEN RIV
1947-65 f)EC~MAR
MAY-JUNE -
AUG-NOV -.174 - _210 . fOO