| River and Reservoir Watch
Version 4.6 |
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| River
Discharge and Reservoir Storage Changes Using Satellite Microwave Radiometry |
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Location of this Satellite Gauging Reach |
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Usumacinta |
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Center: |
-91.62 |
Long. |
Signal/Noise: |
15.4 |
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| GFDS Area ID: |
63 |
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Mexico |
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Center: |
17.83 |
Lat. |
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Very Good |
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| GEE
Time Lapse |
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WorldView
Time Lapse |
Learn more about
this river |
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48239 |
sq km |
WBM contributing area |
| Last measured: |
17-Jul-25 |
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| Discharge: |
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3931 |
m3/sec |
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Status: |
2 |
(1, low; 2, normal flow; 3, moderate flood, r
>2.33 y; 4, major flood, r >5 y) |
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| 7-day Runoff |
48.8 |
mm |
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116% |
(7-day runoff compared to 20 y average for this
date, 2004-2023) |
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| Flood Magnitude: |
0.0 |
Scale of 0-10 |
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Flood
Magnitude Defined |
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Technical
Summary |
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Notes: |
7-day forward moving average is applied. |
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Geolocation correction, commencing April 1,
2012: |
0 |
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Low flow is 20th percentile discharge for this
day, 2003-2013. |
Noise filter: |
>.05 daily signal change |
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Notes: |
Log
Pearson Type III is used to compute recurrence intervals from 27 years of
record (1998-2024) |
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Mean discharge |
3405 |
m3/s |
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| Annual Runoff (percent of mean, 1998-2021) |
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Mean Runoff |
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2306 |
mm |
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| Mann-Kendall
Runoff Trend Analysis (5%) |
M-K |
139 |
Significant? |
yes |
Major Floods |
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10 = flood of record |
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0.03 |
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z-stat |
3.04 |
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| Regression
slope: |
0.03 |
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p-value |
0.00 |
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Annual Maximum Q, m3/s |
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| Brakenridge,
G. R., Nghiem, S. V., Kugler, Z., Kettner, A. J., Paris, S., Cohen, S. |
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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 |
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| Robert.Brakenridge@Colorado.edu |
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Sen's slope: |
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98.84 |
z-stat |
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Regression slope: |
127.03 |
p-value |
0.25 |
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Significant? |
no |
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Coefficients of
Polynomial or Linear Rating Curve used: |
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0.00 |
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-78862.42 |
78120.72 |
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x^4 |
x^3 |
x^2 |
x |
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