Measuring compound flood potential from river discharge and storm surge extremes at the global scale

Couasnon, Anaïs; Eilander, Dirk; Muis, Sanne; Veldkamp, Ted I. E.; Haigh, Ivan D.; Wahl, Thomas; Winsemius, Hessel C.; Ward, Philip J.

doi:10.5194/nhess-20-489-2020

Articles | Volume 20, issue 2

https://doi.org/10.5194/nhess-20-489-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Global- and continental-scale risk assessment for natural...

https://doi.org/10.5194/nhess-20-489-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 2

Research article

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21 Feb 2020

Research article | Highlight paper |

| 21 Feb 2020

Measuring compound flood potential from river discharge and storm surge extremes at the global scale

Anaïs Couasnon, Dirk Eilander, Sanne Muis, Ted I. E. Veldkamp, Ivan D. Haigh, Thomas Wahl, Hessel C. Winsemius, and Philip J. Ward

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Aug 2019	103	21	3	127
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Oct 2019	51	21	1	73
Nov 2019	26	16	0	42
Dec 2019	36	20	0	56
Jan 2020	31	19	0	50
Feb 2020	413	133	2	548
Mar 2020	387	95	4	486
Apr 2020	253	53	2	308
May 2020	186	48	6	240
Jun 2020	143	42	3	188
Jul 2020	69	32	2	103
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Sep 2020	94	29	0	123
Oct 2020	62	39	1	102
Nov 2020	64	33	1	98
Dec 2020	77	27	1	105
Jan 2021	91	45	1	137
Feb 2021	82	34	0	116
Mar 2021	86	36	1	123
Apr 2021	64	34	2	100
May 2021	63	44	0	107
Jun 2021	66	52	2	120
Jul 2021	71	33	0	104
Aug 2021	41	40	1	82
Sep 2021	61	53	1	115
Oct 2021	57	77	2	136
Nov 2021	63	60	0	123
Dec 2021	42	34	1	77
Jan 2022	66	47	1	114
Feb 2022	133	36	2	171
Mar 2022	86	49	0	135
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May 2022	59	25	1	85
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Nov 2022	86	37	1	124
Dec 2022	67	40	2	109
Jan 2023	87	40	7	134
Feb 2023	71	27	2	100
Mar 2023	141	49	11	201
Apr 2023	77	41	3	121
May 2023	97	55	7	159
Jun 2023	99	34	1	134
Jul 2023	78	28	0	106
Aug 2023	147	25	2	174
Sep 2023	220	41	3	264
Oct 2023	323	44	4	371
Nov 2023	223	21	0	244
Dec 2023	110	25	2	137
Jan 2024	142	31	2	175
Feb 2024	129	42	4	175
Mar 2024	122	36	0	158
Apr 2024	131	28	3	162
May 2024	119	32	3	154
Jun 2024	134	21	1	156
Jul 2024	103	37	4	144
Aug 2024	111	19	10	140
Sep 2024	154	24	8	186
Oct 2024	103	23	1	127
Nov 2024	81	20	2	103
Dec 2024	79	25	1	105
Jan 2025	84	21	0	105
Feb 2025	117	26	2	145
Mar 2025	110	20	2	132
Apr 2025	114	34	2	150
May 2025	141	20	3	164
Jun 2025	119	24	2	145
Jul 2025	126	38	4	168
Aug 2025	118	24	4	146
Sep 2025	148	33	3	184
Oct 2025	142	45	4	191
Nov 2025	110	29	0	139

Cumulative views and downloads (calculated since 19 Jul 2019)

Month	HTML	PDF	XML	Total
Jul 2019	292	78	2	372
Aug 2019	103	21	3	127
Sep 2019	42	27	0	69
Oct 2019	51	21	1	73
Nov 2019	26	16	0	42
Dec 2019	36	20	0	56
Jan 2020	31	19	0	50
Feb 2020	413	133	2	548
Mar 2020	387	95	4	486
Apr 2020	253	53	2	308
May 2020	186	48	6	240
Jun 2020	143	42	3	188
Jul 2020	69	32	2	103
Aug 2020	92	36	1	129
Sep 2020	94	29	0	123
Oct 2020	62	39	1	102
Nov 2020	64	33	1	98
Dec 2020	77	27	1	105
Jan 2021	91	45	1	137
Feb 2021	82	34	0	116
Mar 2021	86	36	1	123
Apr 2021	64	34	2	100
May 2021	63	44	0	107
Jun 2021	66	52	2	120
Jul 2021	71	33	0	104
Aug 2021	41	40	1	82
Sep 2021	61	53	1	115
Oct 2021	57	77	2	136
Nov 2021	63	60	0	123
Dec 2021	42	34	1	77
Jan 2022	66	47	1	114
Feb 2022	133	36	2	171
Mar 2022	86	49	0	135
Apr 2022	72	38	3	113
May 2022	59	25	1	85
Jun 2022	56	25	1	82
Jul 2022	137	25	0	162
Aug 2022	135	31	2	168
Sep 2022	74	19	1	94
Oct 2022	72	29	1	102
Nov 2022	86	37	1	124
Dec 2022	67	40	2	109
Jan 2023	87	40	7	134
Feb 2023	71	27	2	100
Mar 2023	141	49	11	201
Apr 2023	77	41	3	121
May 2023	97	55	7	159
Jun 2023	99	34	1	134
Jul 2023	78	28	0	106
Aug 2023	147	25	2	174
Sep 2023	220	41	3	264
Oct 2023	323	44	4	371
Nov 2023	223	21	0	244
Dec 2023	110	25	2	137
Jan 2024	142	31	2	175
Feb 2024	129	42	4	175
Mar 2024	122	36	0	158
Apr 2024	131	28	3	162
May 2024	119	32	3	154
Jun 2024	134	21	1	156
Jul 2024	103	37	4	144
Aug 2024	111	19	10	140
Sep 2024	154	24	8	186
Oct 2024	103	23	1	127
Nov 2024	81	20	2	103
Dec 2024	79	25	1	105
Jan 2025	84	21	0	105
Feb 2025	117	26	2	145
Mar 2025	110	20	2	132
Apr 2025	114	34	2	150
May 2025	141	20	3	164
Jun 2025	119	24	2	145
Jul 2025	126	38	4	168
Aug 2025	118	24	4	146
Sep 2025	148	33	3	184
Oct 2025	142	45	4	191
Nov 2025	110	29	0	139

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Short summary

When a high river discharge coincides with a high storm surge level, this can exarcebate flood level, depth, and duration, resulting in a so-called compound flood event. These events are not currently included in global flood models. In this research, we analyse the timing and correlation between modelled discharge and storm surge level time series in deltas and estuaries. Our results provide a first indication of regions along the global coastline with a high compound flooding potential.


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