DRAINAGEBASIN
RIVERBASIN
TRIBUTARY
RIVERBED
ESTUARY
MEANDER
SOURCE
RIVER
LAKE
J
R
Q
S
Z
M
E
A
N
D
E
R
Y
E
D
T
R
I
B
U
T
A
R
Y
P
P
J
N
H
K
I
K
C
A
A
N
V
C
R
R
D
N
E
W
D
A
K
F
Y
U
I
K
F
A
I
O
O
O
U
I
A
V
N
I
E
S
E
D
V
V
Y
O
E
T
S
L
O
A
Q
L
A
K
E
Z
E
R
I
C
G
D
I
A
C
A
O
B
O
B
D
R
E
N
R
L
E
X
M
U
B
U
E
B
R
U
B
R
K
U
H
S
E
Z
Q
G
O
G
A
E
I
A
I
D
O
B
T
A
O
T
N
N
A
X
V
D
S
V
P
S
T
U
P
Y
O
W
U
N
E
I
O
I
E
U
P
S
A
N
H
O
O
A
I
J
R
Q
N
R
O
K
C
R
I
I
S
Q
R
A
W
W
A
B
V
W
K
X
Y
B
R
G
M
O
R
Y
B
A
I
M
L
M
C
G
I
L
O
U
Z
D
U
L
X
F
I
O
O
I
V
