Risks · 2024

Land area exposed to river flooding (1-in-100-year flood)

Land area exposed to river flooding (1-in-100-year flood): Schwadernau comes top with 98.0% and Champvent comes last with 0.0%. The median across 900 municipalities is 4.0%. The ranking covers municipalities with at least 500 residents.

Podium and top 100

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1Schwadernau98.0%2Widnau93.6%3Scheuren91.5%

#	Municipality	Canton	Land area exposed to river flooding (1-in-100-year flood)
1	Schwadernau	Bern	98.0%
2	Widnau	St. Gallen	93.6%
3	Scheuren	Bern	91.5%
4	Brugg	Aargau	91.3%
5	Worben	Bern	91.1%
6	Kappelen	Bern	90.5%
7	Diepoldsau	St. Gallen	83.9%
8	Noville	Vaud	80.2%
9	Au (SG)	St. Gallen	76.3%
10	Chessel	Vaud	75.0%
11	Walperswil	Bern	70.4%
12	Flaach	Zurich	70.0%
13	Wangen an der Aare	Bern	69.1%
14	Nidau	Bern	65.9%
15	Murten	Fribourg	64.2%
16	Luterbach	Solothurn	62.8%
17	Rottenschwil	Aargau	61.5%
18	Bargen (BE)	Bern	61.3%
19	Rüdtligen-Alchenflüh	Bern	60.5%
20	Siselen	Bern	59.8%
21	Gampelen	Bern	59.4%
22	Balgach	St. Gallen	58.8%
23	Merenschwand	Aargau	58.2%
24	Studen (BE)	Bern	57.2%
25	Müntschemier	Bern	56.6%
26	Martigny	Valais	55.3%
27	Aefligen	Bern	55.1%
28	Dotzigen	Bern	53.6%
29	Ins	Bern	52.4%
30	Kallnach	Bern	50.4%
31	Rennaz	Vaud	50.4%
32	Benken (SG)	St. Gallen	50.2%
33	Büren an der Aare	Bern	49.2%
34	Finsterhennen	Bern	48.2%
35	Roche (VD)	Vaud	47.7%
36	Locarno	Ticino	47.6%
37	Meinisberg	Bern	46.5%
38	Aegerten	Bern	46.3%
39	Jens	Bern	45.5%
40	Hünenberg	Zug	44.9%
41	Zuchwil	Solothurn	44.6%
42	Treycovagnes	Vaud	43.9%
43	Aarberg	Bern	43.7%
44	Gals	Bern	42.9%
45	Ipsach	Bern	42.8%
46	Full-Reuenthal	Aargau	42.7%
47	Mont-Vully	Fribourg	42.6%
48	Solothurn	Solothurn	42.4%
49	Deitingen	Solothurn	42.3%
50	Bellach	Solothurn	42.2%
51	Muntelier	Fribourg	42.1%
52	Obergösgen	Solothurn	41.7%
53	Aristau	Aargau	41.4%
54	Täuffelen	Bern	40.2%
54	Lalden	Valais	40.2%
56	Belp	Bern	40.2%
57	Interlaken	Bern	39.9%
58	Laupen	Bern	39.8%
59	Flumenthal	Solothurn	39.4%
60	Felben-Wellhausen	Thurgau	39.4%
61	Mellingen	Aargau	38.9%
62	Kiesen	Bern	38.8%
63	Buchs (SG)	St. Gallen	38.5%
64	Schwaderloch	Aargau	38.3%
65	Rüderswil	Bern	37.2%
66	Brüttelen	Bern	37.0%
67	Lengnau (BE)	Bern	36.9%
68	Dietikon	Zurich	36.8%
69	Altikon	Zurich	36.6%
70	Payerne	Vaud	36.1%
71	Büetigen	Bern	35.9%
72	Dietwil	Aargau	35.4%
73	Eggenwil	Aargau	35.3%
74	Vernayaz	Valais	35.1%
75	Fischbach-Göslikon	Aargau	35.1%
76	Geroldswil	Zurich	35.0%
77	Andelfingen	Zurich	34.8%
78	Sierre	Valais	34.1%
79	Yverdon-les-Bains	Vaud	34.0%
80	Rüthi (SG)	St. Gallen	33.7%
81	Wiler bei Utzenstorf	Bern	33.7%
82	Aarau	Aargau	33.6%
83	Rebstein	St. Gallen	33.3%
84	Böttstein	Aargau	33.2%
85	Saint-Léonard	Valais	33.2%
86	Utzenstorf	Bern	33.1%
87	Safnern	Bern	33.0%
88	Weinfelden	Thurgau	32.6%
89	Oberrüti	Aargau	32.4%
90	St. Margrethen	St. Gallen	31.7%
90	Yvorne	Vaud	31.7%
92	Orbe	Vaud	31.6%
93	Aarburg	Aargau	31.6%
94	Buchrain	Lucerne	31.6%
95	Uttigen	Bern	31.4%
96	Schönenwerd	Solothurn	31.3%
97	Emmen	Lucerne	31.0%
98	Tuggen	Schwyz	30.7%
99	Oberriet (SG)	St. Gallen	29.8%
100	Niedergösgen	Solothurn	29.7%

Bottom of the ranking

#	Municipality	Canton	Land area exposed to river flooding (1-in-100-year flood)
885	La Roche	Fribourg	0.0%
885	Val-de-Charmey	Fribourg	0.0%
885	Mendrisio	Ticino	0.0%
889	Bürglen (UR)	Uri	0.0%
890	Männedorf	Zurich	0.0%
890	Maur	Zurich	0.0%
890	Leissigen	Bern	0.0%
890	Kriegstetten	Solothurn	0.0%
890	Recherswil	Solothurn	0.0%
890	Rüfenach	Aargau	0.0%
890	Lavertezzo	Ticino	0.0%
890	Muralto	Ticino	0.0%
890	Prangins	Vaud	0.0%
890	Vulliens	Vaud	0.0%
890	Champvent	Vaud	0.0%

Regions compared

Population-weighted averages for rates; totals for counts.

Other rankings on the same theme

Land area exposed to river flooding (1-in-10-year flood)Land area exposed to river flooding (1-in-500-year flood)Land area under more than 1 m of water in a 1-in-100-year river flood Seismic hazard: peak ground acceleration (10 % in 50 years)

Frequently asked questions

Which municipality ranks first for “Land area exposed to river flooding (1-in-100-year flood)”?

Schwadernau ranks first for “Land area exposed to river flooding (1-in-100-year flood)”, with 98.0%.

What is the median for “Land area exposed to river flooding (1-in-100-year flood)”?

The median across the 900 ranked municipalities is 4.0%.