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 Area Changes Using Satellite Microwave Radiometry A. J. Kettner*
Merowe Reservoir Center: 32.26  Long. S/N rating: Excellent T. De Groeve, S. Paris**
GFDS Site Number 11808 Modis History Sudan Center: 18.93  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: 96.9% Status: 4 (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 99.1%
2000 99.3%
2001 99.3%
2002 99.4%
2003 99.5%
2004 99.4%
2005 99.5%
2006 99.3%
2007 99.8%
2008 99.3%
2009 93.4%
2010 96.9%
2011 97.1%
2012 97.3%
Recent part of record. Five-day forward moving average is applied. 2013 96.8%
2014 94.1%
2015 94.5%
2016 93.9%
2017 94.2%
Frequency Analysis, 1998-2017
25 yr*
101.0%
10 yr*
100.3%
5 yr*
99.6%
1.5 yr*
96.8%
Mean
92.7%
*From Log Pearson III 
Complete record. Five-day forward moving average is applied Thresholds (adjusted for each day of the year) 12-Nov-18
<25th percentile Low, "1" 25th: 92.1%
Reservoir was created in: 2008 25th-74th percentile Normal, "2" 75th: 94.6%
75th-90th percentile High, "3" 90th: 95.9%
>90th percentile Very high, "4"
Percentiles are for a fixed  reference period (2009-2017)
Site statistics: noise*: 0.001 signal/noise: 44.6 signal**: 0.027
* average of daily signal change **range of signal