WSP00398

• File Number: 8200.760
• Description: Yampa River General
• State: CO
• Basin: Yampa/White
• Water Division: 6
• Date: 4/1/1980
• Author: USGS
• Title: Analysis of Stream Quality in the Yampa River Basin - Colorado and Wyoming - 1980
• Water Supply Pro - Doc Type: Report/Study

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IllUSTRATIONS

Figure 1.. Map of the Yampa River basin showing location of sampl ing
sites . . . . . . . . . . . . . . . . . 2
2-7. Graphs showing:
2. Seasonal temperature patterns, 1963 water year. 11
3. Diel variation of stream temperature at selected sites
along the Yampa River, September 23-24, 1975. . . 15
4. Relationships between stream-temperature harmonic-
analysis coefficients and altitude for streams in the
Yampa River basin, 1960-75. . . . . . . . . . . . 20
5. Observed and simulated annual mean discharge-weighted
dissolved-sol ids concentrations, Yampa River near
Maybell, Colo., 195~-72 . . . . . . . . . . . . .. 30
6. Observed and simulated annual mean discharge-weighted
calcium concentrations, Yampa River near Maybell,
Colo., 1951-72. . . . . . . . . . . . . . . . . .. 32
7. Observed and simulated annual mean discharge-weighted
dissolved"sol ids concentrations, little Snake River
nea r Li I y, Co I ci., 1951-69 . . . . . . . . . . . .. 33
8. Map showing location of stream sites where samples for analy-
sis of major inorganic constituents were collected during
the basinwide reconnaissance, August-September 1975 . . .. 34
9-16. Graphs showing:
9. Specific conductance in the Yampa and little Snake
Rivers, August-September 1975 and August 1976 . . 37
10. Seasonal patterns of streamflow and specific conduct-
ance, Yampa River below diversion near Hayden, Colo.
(site Y-47), August 1975-September 1976 . . . . . .. 38
11. Streamflow and specific conductance, Yampa River at
Steamboat Springs, Colo. (site Y-64), April-September

1977. . . . . . . . . . . . . . . . . . . . . . . .. 39
12; Relationships between streamflow and specific conduct-
ance during low flow and snowmelt runoff, Yampa River
at Steamboat Springs, Colo. (site Y-64), ApriJ-
September 1977. . . . . . . . . . . . . . . . . 41
13. Frequency aistributions of specific conductance in
streams of the Yampa River basin, August-September
1975 through August-September 1976. . . . ~ . . .. 42
14. Frequency distributions of total selenium and dissolved
copper in streams of the Yampa River basin, August-
September 1975. . . . . . . . . . . . . . . 44
15. Probability plots of total zinc in streams of the Yampa
River basin, August-September 1975. . . . . . . . .. 45
16. Application of outl ier-analysis technique to frequency
distribution of total manganese in streams of the
Yampa River basin, August-September 1975. . . .. .. 47

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