Relations of Main-Stem Reservoir Operations and Specific Conductance in the Lower Arkansas River

• Description: Relations of Main-Stem Reservoir Operations and Specific Conductance in the Lower Arkansas River
• State: CO
• Author: Lewis, Michael; Brendle, Daniel
• Title: Relations of Main-Stem Reservoir Operations and Specific Conductance in the Lower Arkansas River
• Water Supply Pro - Doc Type: Report/Study

1,400
1,200
1,000
800
600
400
200
0`
1
1,400
1,200
1,000
800
600
400
200
1966 -74
t
EQUIVALENT TO THE
SECONDARY MAXIMUM CONTAMINANT LEVEL
FOR DISSOLVED- SOLIDS CONCENTRATION tt�,
OF 500 MILLIGRAMS PER LITER (U.S. Environmental t
Protection Agency, 1986; Cain, 1987)
2 3 4 5 7 10 20 30 40 50 70 100
0
1 2 3 4 5 7 10 20 30 40 50 70 100
PERCENTAGE OF TIME INDICATED SPECIFIC CONDUCTANCE WAS EQUALED OR EXCEEDED
STATION 07099400 (ARKANSAS RIVER ABOVE PUEBLO)
_ - -_ ARKANSAS RIVER AT DIVERSION FOR PUEBLO BOARD OF WATER WORKS
.. . . ARKANSAS RIVER AT DIVERSION FOR ST. CHARLES MESA WATER DISTRICT
Figure 12. Duration frequency of specific conductance at station 07099400 (Arkansas River above Pueblo); Arkansas
River at diversion for the Pueblo Board of Water Works; and Arkansas River at diversion for the St. Charles Mesa Water
District, 1966 -74 and 1975 -94.
22 Relations of Streamflow and Specific- Conductance Trends to Reservoir Operations in the Lower Arkansas
River, Southeastern Colorado
1975 -94
EQUIVALENT TO THE
SECONDARY MAXIMUM CONTAMINANT LEVEL
FOR DISSOLVED- SOLIDS CONCENTRATION
OF 500 MILLIGRAMS PER LITER (U.S. Environmental
Protection Agency, 1986; Cain, 1987)
'�-- - - - - --
.....
EXAMPLE
The specific conductance of the
Arkansas River at the diversion
for the St. Charles Mesa Water
District was equal to or exceeded
716 microsiemens per centimeter
about 27 percent of the time during
1975 -94.
0
1 2 3 4 5 7 10 20 30 40 50 70 100
PERCENTAGE OF TIME INDICATED SPECIFIC CONDUCTANCE WAS EQUALED OR EXCEEDED
STATION 07099400 (ARKANSAS RIVER ABOVE PUEBLO)
_ - -_ ARKANSAS RIVER AT DIVERSION FOR PUEBLO BOARD OF WATER WORKS
.. . . ARKANSAS RIVER AT DIVERSION FOR ST. CHARLES MESA WATER DISTRICT
Figure 12. Duration frequency of specific conductance at station 07099400 (Arkansas River above Pueblo); Arkansas
River at diversion for the Pueblo Board of Water Works; and Arkansas River at diversion for the St. Charles Mesa Water
District, 1966 -74 and 1975 -94.
22 Relations of Streamflow and Specific- Conductance Trends to Reservoir Operations in the Lower Arkansas
River, Southeastern Colorado