WSP01897

• File Number: 8270.100
• Description: Colorado River Basin Water Quality/Salinity -- Misc Water Quality
• Basin: Colorado Mainstem
• Water Division: 5
• Date: 1/1/1977
• Author: USDOI
• Title: Quality of Water - Colorado River Basin - Progress Report No. 8 - January 1977
• Water Supply Pro - Doc Type: Report/Study

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EVALUATIONS OF EXISTING SALINITY CO~ITIONS

2.

Kev Stations with Partial Records
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Green River near Green River; Wyoming (Statfon ~o. l).--Flow records
are available at this station from April 1951 and quality records from
May 1951. The records have been extended back to 1941 by correlation
with nearby stations.

Green River near Greendale, Utah (Station No. 2).--Flow measurements
or comparable data are available for this station for the report period.
but chemical quality data are available only for the years 1957 through
1974. inclusive. Extensive correlations with other available records
on the Green River system were employed to develop estimates for dissolved
solids.

Duchesne River near Randlett; Utah (Station No. 3).--Flow records
have been obtained continuously since 1943, and quality data are available
for 1951 and 1957 through 1974. Correlations with other stations in
the Duchesne River system were employed to estimate the data for the
missing period.

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San Rafael River near Green River, Utah (Station No. 5).--Correla-
tions were used to estimate flow at this gage from 1941 to 1945 after
which measurements of flow were available. Quality sampling started
in 1946 and is complete for the remainder of the study period except
for 1950. Extensions of available data provided satisfactory estimates
of quality for the missing years.

Colorado River near Glenwood Springs, Colorado (Station No. 6).--
Correlations were used to estimate the quality data for the 1941 year
prior to October 1. Quality records are available after October 1, 1941.
Flow records are available for the entire period of study.

San Juan River near Archuleta, New Mexico (Station No. 10).--For the
period 1954 to 1974 flow and quality data presented are a combination
of measurements obtained near Archuleta and at Blanco, New ~exico, with
a few adjustments and correlations. Correlations were employed to estimate
the data for 1941-54. Quality data for 1969 through 1974 were estimated
from once-a-month sampling at the Archuleta gaging station. In 1974
electrical conductivity measurements were started on a 3-time per week
basis along with occasional chemical analyses. These measurements indicate
the quality to be very uniform since the station is close to the outlet
works of the ~avajo Dam.

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Colorado River at Lees Ferrv, Arizona (Station No. 12).--This station
has complete flow records available for the study period but lacks quality
of water measurements for 1941, 1942, 1946, and 1947. Quality data for
these years were estimated by extensive multiple correlations using data
for the Colorado River near Cisco, Utah.~nd near Grand Canyon, Arizona;

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