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: 12-Nov-18 Obtain Data *CSDMS/INSTAAR, University of Colorado
Status: 95.4% 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) 12-Nov-18
Complete record. Five-day forward moving average is applied <25th percentile Low, "1" 25th: 93.8%
25th-74th percentile Normal, "2" 75th: 95.7%
75th-90th percentile High, "3" 90th: 96.2%
>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.