River and Reservoir Watch Version 4.6
River Discharge and Reservoir Storage Changes Using Satellite Microwave Radiometry Location of this Satellite Gauging Reach
Usumacinta Center: -91.624 Long. Signal/Noise: 11.8
GFDS Area ID: 63 Mexico Center: 17.8265 Lat. Good
GEE Time Lapse WorldView Time Lapse Learn more about this river 48239 sq km WBM contributing area
Last measured: 25-Jul-24
Discharge: 4077 m3/sec Status: 2 (1, low; 2, normal flow; 3, moderate flood, r >2.33 y; 4, major flood, r >5 y)
7-day Runoff 52.7 mm 113% (7-day runoff compared to 20 y average for this date, 2004-2023)
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, 2003-2013.
Notes: Log Pearson Type III is used to compute recurrence intervals from 24 years of record (1998-2023)
Mean discharge 3533 m3/s
Annual Runoff (percent of mean, 1998-2021) Mean Runoff 2390 mm
Mann-Kendall Runoff Trend Analysis (5%) M-K 139 Significant? yes Major Floods 10 = flood of record
Sen's slope:
0.03 z-stat 3.04
Regression slope: 0.03 p-value 0.00
Annual Maximum Q, m3/s
Brakenridge, G. R., Nghiem, S. V., Kettner, A. J., Paris, S., Cohen, S. Access to Data
River and Reservoir Watch Version 4.6, DFO Flood Observatory, University of Colorado Mann-Kendall Max Q Trend Analysis (5%) M-K 71
Robert.Brakenridge@Colorado.edu Sen's slope: 146.89 z-stat 1.54
  Regression slope: 168.09 p-value 0.12
Significant? no
    Coefficients of Polynomial or Linear Rating Curve used:       -92834.92 91496.57  
        x^4 x^3 x^2 x +