229
Modeling Snowmelt Runoff under Climate Change Scenarios
Base station
T and P
Q
Zone 3
Zone 2
Zone 1
100
0
SCA (%)
1
2
3
Time
Cumulative temperature
Cumulative snow melt
FIGURE  10.3  Structure of SRM for a basin divided into three elevation zones. (From
Ferguson, R. I., Progress in Physical Geography, 23(2), 205–227, 1999.)
Study basin
MONTANA
IDAHO
NEVADA
UTAH
WYOMING
IDAHO
UTAH
NEVADA
E a s te r n
S n a k e
R i v e r
P l a i n
IDAHO
WYOMING
42°
115°
114°
42°
113°
112°
111°
43°
110°
Jackson
Jackson
Lake
Fork
H e n ry s
44°
110°
Yellowstone National Park
Boundary
111°
112°
113°
114°
44°
115°
43°
S n a k e
Mud
Lake
R iv er
American
Falls
Reservoir
Lake
Walcott
B ig
Little
W oo d
Wood
Malad
River
Sn ak e
Mi lne r
L a ke
R iv er
R iv e r
R
o
c
k
Cree
k
R a ft
Lo
st
B ig
Lo
st
R
iv
e
r
River
River
Li
ttl
e
R iv er
B
la
c
k
fo
o
t
R iv e r
R iv er
Po rtn euf
G
re
ys
Ri
ve
r
Ri
ve
r
Sa
li
Palisades
Reservoir
King
Hill
Twin
Falls
Pocatello
Idaho
Falls
Based on U.S Geological Survey
digital data, 1:100,000, 1980
Albers Equal-Area projection
Standard parallels 43° 30', 47° 30'
and –114° 00', 41° 45'
No false easting or false northing
0
20
40
0
20 40
Miles
Kilometers
FIGURE  10.4  SRM study basin—Snake River above Palisades Reservoir. (From http://
id.water.usgs.gov/nawqa/reports/ott98/figure/fig2.gif.)