Document ID: EPA-HQ-OPP-2004-0005-0046
Agency: epa
Document Type: Supporting & Related Material
Title: 
Posted Date: 2004-04-02T05:00Z

0
1
2
3
4
5
­
6
­
4
­
2
0
2
4
6
8
10
12
14
Pe
Q
q
p
p
S
e
e
=
+

2
p
P
I
e
a
=
 
0
1
2
3
4
5
­
4
­
2
0
2
4
6
8
10
12
Effective
Precipitation
(
cm)

Observed
Runoff
(

cm)
b)
Forested
sub­
basin
S
=
24
cm;
CN
=
51
0
1
2
3
4
5
­
2
0
2
4
6
8
10
12
Effective
Precipitation
(
cm)

Observed
Runoff
(

cm
)
c)
Tarrawarra
watershed
S
=
8
cm;
CN
=
76
ZEF
Bonn
GLOWA
Volta
GLOWA
Volta
Small
mall
Reservoirs
eservoirs
Reservoir
inventory
with
Reservoir
inventory
with
Landsat
Landsat
ETM
(
RGB
432)

ETM
(
RGB
432)

Nov
7,
1999
(
after
 
wet 
year)

Nov
7,
1999
(
after
 
wet 
year)
Small
Reservoirs
Project
Small
Reservoirs
Project
Small
mall
Reservoirs
eservoirs
Solution:

Solution:

RADAR
RS
RADAR
RS
30
ERS
SAR
30
ERS
SAR
images
&
30
images
&
30
ENVISAT
ENVISAT
images
images
ESA
PI:
Region­
wide
Assessment
and
Monitoring
of
Reservoir
Storage
Volumes.
A
satellite
based
tool
for
efficient
Water
Management
and
Drought
Mitigation.
PENETRATES
PENETRATES
CLOUDS
CLOUDS
ZEF
Bonn
GLOWA
Volta
GLOWA
Volta
Small
mall
Reservoirs
eservoirs
Result
from
61
measured
reservoirs
Result
from
61
measured
reservoirs
A
V
reservoir
log
*

4367
.

1
067
.

2
log
+

 

=

Volume
=
0.00857
*
Area
1.4367
[
m
³
]
A
f
V
pyramid
half
log
2
3
1
log
6
1
log
log
+

+

=

Compare
with
theoretically
Compare
with
theoretically
derived
equation:

derived
equation:

Explains
97.5
%
of
the
measured
variance
Explains
97.5
%
of
the
measured
variance
(
Nash/

(
Nash/
Sutcliffe
Sutcliffe)