River and Reservoir Watch Version 4.5

River Discharge and Reservoir Storage Changes Using Satellite Microwave Radiometry

Gan

Center:

114.75

Long.

Signal/Noise:

11.4

GFDS Area ID:

2098

China

Center:

26.729

Lat.

Good

GEE Time Lapse

WorldView Time Lapse

Learn more about this river

40614

sq km

WBM contributing area

Last measured:

31-Dec-24

Discharge:

650

m3/sec

Status:

2

(1, low; 2, normal flow; 3, moderate flood, r >1.5 y; 4, major flood, r >5 y)

7-day Runoff

9.9

mm

#N/A

(7-day runoff compared to average for this date, 2003-2011,2014-2019)

Flood Magnitude:

0.0

Scale of 0-10

Flood Magnitude Defined

Technical Summary

Notes:

7-day forward weighted moving average is applied.

Geolocation correction, commencing April 1, 2012:

0

Low flow is 20th percentile discharge for this day, 2003-2010.

Notes:

Log Pearson Type III is used to compute recurrence intervals from 15 years of record (2003-2011,2014-2019)

Mean discharge

574

m3/s

Annual Runoff (percent of mean, 2003-2011,2013-2019)

Mean Runoff

447

mm

Major Floods

10 = Flood of Record

Protected Under United States Copyright Law

Access to Data

Sample Citation: Brakenridge, G. R., Kettner, A. J., Paris, S., Cohen, S., Nghiem, S. V. , River and Reservoir Watch Version 4.5,

DFO Flood Observatory, University of Colorado, USA. http://floodobservatory.colorado.edu/ SiteDisplays/ 20.htm (Accessed 20 February 2023).

Robert.Brakenridge@Colorado.edu

Coefficients of Polynomial or Linear Rating Curve used:

-15808.05

15815.57

x^4

x^3

x^2

x

+