| River and Reservoir Watch
Version 3.5 |
|
|
This work and associated data are protected by a Creative Commons
License. |
G. R.
Brakenridge* |
|
|
| River
Discharge and Reservoir Storage Changes Using Satellite Microwave Radiometry |
|
|
|
|
|
|
|
A. J. Kettner* |
|
|
|
|
|
Lake Nasser |
Nile |
|
Center: |
31.12 |
Long. |
S/N rating: |
Fair |
|
|
T. De Groeve, S. Paris** |
|
| GFDS Site Number |
11842 |
Modis
History |
Sudan |
|
Center: |
21.63 |
Lat. |
|
|
|
|
S. Cohen*** |
|
|
| GEE
Time Lapse |
|
|
|
Learn more about this
reservoir |
|
|
sq km |
WBM contributing area |
S. V. Nghiem**** |
|
|
| Last measured: |
18-Aug-19 |
|
|
|
|
|
|
Obtain Data |
|
|
|
*CSDMS/INSTAAR, University of Colorado |
| Status: |
|
93.8% |
of maximum |
Status: |
2 |
(1, low; 2, normal; 3, high; 4, very high)* |
|
|
|
**Joint Research Centre, Ispra, Italy |
|
|
|
|
|
|
|
*See below for threshold definitions |
|
|
|
***University of Alabama |
|
|
|
|
|
|
|
|
|
|
Technical
Summary |
|
|
|
***JPL/Caltech |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Annual Maximum |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1998 |
99.3% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1999 |
100.0% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2000 |
99.3% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2001 |
98.9% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2002 |
98.9% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2003 |
98.2% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2004 |
97.2% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2005 |
95.0% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2006 |
96.4% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2007 |
99.5% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2008 |
99.2% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2009 |
98.0% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2010 |
96.4% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2011 |
97.6% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2012 |
95.1% |
|
|
| Recent
part of record. Five-day forward moving average is applied. |
|
|
|
|
|
|
|
|
2013 |
95.0% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2014 |
97.4% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2015 |
97.8% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2016 |
95.1% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2017 |
96.8% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Frequency Analysis, 1998-2017 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
25 yr* |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
100.3% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
10 yr* |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
99.6% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
5 yr* |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
99.0% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1.5 yr* |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
96.9% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Mean |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
94.7% |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
*From
Log Pearson III |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Thresholds (adjusted for each day of the
year) |
|
18-Aug-19 |
|
|
|
|
|
|
| Complete
record. Five-day forward moving average is applied |
|
<25th percentile |
Low, "1" |
|
25th: |
91.9% |
|
|
|
|
|
|
|
|
|
|
|
|
25th-74th percentile |
Normal, "2" |
75th: |
94.6% |
|
|
|
|
|
|
|
|
|
|
|
|
75th-90th percentile |
High, "3" |
|
90th: |
94.8% |
|
|
|
|
|
|
|
|
|
|
|
|
>90th percentile |
Very high, "4" |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Percentiles are for a fixed 10 year
reference period (2003-2013) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Site
statistics: |
noise*: |
0.016 |
signal/noise: |
5.1 |
signal**: |
0.083 |
|
|
|
|
|
|
|
|
|
|
|
|
* average of daily signal change, 1998-2010. |
**range of signal, 2003-2007 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Also
provided below are G-REALM Height Variations from TOPEX/POSEIDON/Jason-1 and
Jason-2/OSTM Altimetry |
|
|
|
|
|
|
|
|
| The scale
is shown on the right axis. These are
relative lake height variations computed from TOPEX/POSEIDON (T/P), Jason-1
and Jason-2/OSTM altimetry |
|
|
|
|
|
| with respect to
a datum that is based on a single fly-over date of the Jason-2/OSTM
mission. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|