9431

• UCREFRP Catalog Number: 9431
• Author: Chafin, D. T.
• Title: Evaluation of Trends in pH in the Yampa River, Northwestern Colorado, 1950-2000.
• USFW Year: 2002.
• USFW - Doc Type: Denver.
• Copyright Material: NO

8.7
H
Z
Z7
_ ~ 8.6
~Q
Z
H
U)
8.5
9.5
Z 9.0
WZ
} O ~ 8.5
XOa~W 8.0
p ~ C7 ~ 7.5
> W J D- 7.0
OZZa s.5
vii ~ s.o
~ 5.5
25
z~
- ~ 24
LLI cA
J
F U 23
0¢C W 22
d~
W W 21
Hp
20
- + + + + + +
+ + + +
+ +
i i i i i i i
- + + + -
- + ~++++ -
132 percent + 86 ercent +
of saturation + 86 percent p + _
_ + of saturation of saturation +
_ + + I + + + + + + _
+ i i i i
+ +
- + + -
_ + + _
+ + +
+ + + + + -
+ +
_ + + __
i i i + + t +
23 AUGUST 1999 2a
Figure 9. Diurnal measurements at Yampa River near Maybell, August 23-24, 1999.
8.7
z
~ a.s
zo
_ °C
as
0
Z 8.5
F
6.4
7.5
z
w
z
XOQ~
O ¢ ¢ F
wZ~J 7.0
> W J ~
OQ~~
cnpz
p U 6.5
26
Z [A 25
- ~ 24
ui in
w w 23
Q ~ 22
~ W 21
~ ~ 20
~ ~ 19
18
25 26
AUGUST 1999
Figure 10. Diurnal measurements at Yampa River at Deerlodge Park, August 25-26, 1999.
+ + +
_ + + + + +
+ + + + + + + +
i i i i
106 percent
/ of saturation +
+ + +
+ + + + + + + +
-F + ~- + -
90 percent _
of saturation ~+
i i i i i i
+ +
+ +
-~ + +
+ + + +
+ + + + +
+ +
+ + + t +
~ ~
INTERPRETATION OF DATA COLLECTED FOR THIS STUDY 15