Statistics

Statistics by country and year

Yearly summaries computed from the daily readings of every station: how many station-days were spent below the low-water level (LDC) or above the high-water level (HDC) — as a count and as a share of the station-days with thresholds. Useful for agriculture (irrigation seasons with low water) and navigation (days with restricted draught).

Agriculture: station-days below LDC mark the low-water periods when irrigation intakes and water availability are under pressure.
Navigation: days below LDC mean draught restrictions on that sector; days above HDC mean suspended traffic.

Daily data from 1879 to 6 November 2026

Download this tab’s data (CSV)

LDC: Low-water mark. The river stays above it on 94 of 100 ice-free days; below it, ships cannot sail fully loaded.
HDC: High-water mark. The river exceeds it on 1 day in 100; above it, navigation can be suspended.
Station-days: One station-day is one station measured for one day: 13 stations over 10 days make 130 station-days. It shows how widely and how long something lasted.

In 2025, most days below LDC were in October

Navigation windows

Days below LDC per month, by Danube sector from upstream to downstream: when draught is restricted. Minimum navigation depths will appear when the official sources deliver them.

13%

12%

17%

44%

22%

39%

48%

17%

days below LDC% of station-days

Sector: Germany · 10 stations

Sector: Germany — Navigation windows 2025
Station	RKM	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	days below LDC
Oberndorf	2397.4	0	0	0	13	21	14	16	13	13	7	1	6	104
Regensburg Eiserne Brücke	2379.3	0	0	1	16	24	18	16	16	12	11	2	8	124
Schwabelweis	2376.5	0	0	3	16	22	17	15	15	9	6	1	4	108
Pfatter	2350.7	0	0	0	2	16	13	6	12	7	5	0	4	65
Straubing	2321.29	·	·	·	·	·	·	·	·	·	0	0	3	3
Pfelling	2305.5	0	0	0	0	16	12	12	13	7	7	0	5	72
Deggendorf	2284.4	0	0	0	4	20	13	14	5	5	6	0	4	71
Hofkirchen	2256.9	0	0	0	0	17	10	12	2	4	5	0	2	52
Vilshofen	2249.5	0	0	0	1	15	6	9	0	1	3	0	2	37
Passau Donau	2226.7	0	0	10	6	9	0	1	0	1	8	5	11	51
Sector		0	0	14	58	160	103	101	76	59	58	9	49	687

Sector: Austria · 5 stations

Sector: Austria — Navigation windows 2025
Station	RKM	Feb	Mar	Apr	May	Jun	Jul	Oct	Nov	Dec	days below LDC
Ybbs	2058.8	0	0	0	0	0	0	0	0	0	0
Kienstock	2015	0	1	0	0	0	0	3	3	11	18
Bärndorf	1976	0	0	0	0	0	0	0	0	0	0
Korneuburg	1941	0	0	1	0	0	0	0	0	5	6
Wildungsmauer	1894	3	19	1	3	2	1	·	·	·	29
Sector		3	20	2	3	2	1	3	3	16	53

Sector: Slovakia · 3 stations

Sector: Slovakia — Navigation windows 2025
Station	RKM	Jan	Feb	Mar	Apr	May	Jun	Jul	Sep	Oct	Nov	Dec	days below LDC
Devín	1879	0	0	0	0	0	0	0	0	1	0	8	9
Bratislava	1868.75	0	0	0	0	0	0	0	0	0	0	0	0
Medveďov	1806.3	1	6	24	6	11	8	6	7	20	12	19	120
Sector		1	6	24	6	11	8	6	7	21	12	27	129

Sector: Hungary · 20 stations

Sector: Hungary — Navigation windows 2025
Station	RKM	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	days below LDC
Nagybajcs	1801.01	0	2	11	0	3	2	5	0	2	9	3	15	52
Gönyű	1790.55	0	0	0	0	0	0	0	0	0	0	0	4	4
Komárom	1768.35	0	5	19	6	8	7	8	0	5	12	6	15	91
Esztergom	1718.65	0	4	13	2	7	6	8	0	3	10	4	10	67
Szob	1707.2	0	4	15	4	9	6	8	0	4	13	4	10	77
Nagymaros	1694.6	0	3	14	2	6	5	8	0	4	11	3	9	65
Vác	1679.5	0	2	10	0	5	4	8	0	4	9	2	9	53
Göd	1671	0	0	0	0	0	0	2	0	0	2	0	3	7
Óbuda	1654	·	·	·	·	·	·	·	·	·	0	0	6	6
Budapest	1646.5	0	0	5	0	0	0	5	0	3	8	0	9	30
Budafok	1636.9	0	0	3	0	0	0	6	0	2	6	0	8	25
Ercsi	1613.2	0	0	0	0	0	0	1	0	0	0	0	3	4
Adony	1598.11	0	0	0	0	0	0	0	0	0	0	0	0	0
Dunaújváros	1580.6	0	2	10	0	5	4	8	0	4	9	1	8	51
Dunaföldvár	1560.6	0	5	21	6	9	7	10	2	9	17	6	9	101
Paks	1531.3	1	7	23	7	11	7	10	4	13	19	7	13	122
Dombori	1506.8	0	0	4	0	0	0	6	0	1	7	0	7	25
Baja	1478.7	0	0	9	1	7	5	10	0	6	16	2	8	64
Duna Dunaszekcső	1460	0	0	3	0	0	5	9	0	4	13	0	7	41
Duna Mohács	1446	0	0	9	1	6	5	11	2	9	18	2	7	70
Sector		1	34	169	29	76	63	123	8	73	179	40	160	955

Sector: Croatia · 5 stations

Sector: Croatia — Navigation windows 2025
Station	RKM	Mar	Jun	Jul	Sep	Oct	Nov	Dec	days below LDC
Batina	1424.6	5	5	10	4	14	2	8	48
Aljmaš	1380.25	0	0	5	0	3	0	0	8
Dalj	1353.7	0	2	7	3	11	0	6	29
Vukovar	1333.4	0	0	6	3	7	0	5	21
Ilok	1298.7	4	4	10	4	14	0	6	42
Sector		9	11	38	14	49	2	25	148

Sector: Serbia · 12 stations

Sector: Serbia — Navigation windows 2025
Station	RKM	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	days below LDC
Bezdan	1425	0	0	8	0	2	6	10	4	12	17	2	8	69
Apatin	1401	0	0	6	0	0	5	10	4	7	15	0	7	54
Bogojevo	1367	0	0	0	0	0	0	6	0	2	5	0	2	15
Bačka Palanka	1298	0	0	4	0	0	3	10	0	4	14	0	6	41
Novi Sad	1255	0	2	10	0	0	5	11	8	17	21	2	7	83
Slankamen	1216	0	0	5	0	0	4	12	8	16	23	0	4	72
Zemun	1173	0	0	0	0	0	4	12	11	16	22	0	4	69
Pančevo	1154	0	0	0	0	0	5	16	15	21	25	0	5	87
Smederevo	1116	0	0	0	0	0	3	15	14	13	24	1	5	75
Banatska Palanka	1076	4	9	7	2	4	15	23	18	19	27	9	10	147
Veliko Gradište	1059	16	18	12	6	10	18	29	21	26	31	24	21	232
Golubac	1042	0	0	0	0	0	0	0	0	0	0	0	0	0
Sector		20	29	52	8	16	68	154	103	153	224	38	79	944

Sector: Romania · 13 stations

Sector: Romania — Navigation windows 2025
Station	RKM	Mar	Jun	Jul	Aug	Sep	Oct	Nov	Dec	days below LDC
Calafat	795	0	10	30	17	30	31	5	4	127
Bechet	679	0	8	28	16	29	29	1	2	113
Corabia	630	0	7	29	16	30	29	2	1	114
Giurgiu	493	0	6	31	16	30	29	4	0	116
Oltenița	430	1	7	31	18	30	31	8	1	127
Călărași	370	0	5	31	17	30	30	5	0	118
Cernavodă	300	0	4	31	16	30	25	5	0	111
Hârșova	253	0	4	31	16	30	26	6	0	113
Brăila	170	0	3	31	17	30	28	6	0	115
Galați	150	0	2	31	18	30	26	6	0	113
Isaccea	103	0	3	30	18	30	31	7	0	119
Tulcea	71	0	3	31	19	30	31	7	0	121
Sulina	0	0	0	0	0	0	0	0	0	0
Sector		1	62	365	204	359	346	62	8	1407

Sector: Bulgaria · 6 stations

Sector: Bulgaria — Navigation windows 2025
Station	RKM	Mar	Jun	Jul	Aug	Sep	Oct	Nov	Dec	days below LDC
Novo Selo	833	2	9	29	17	30	30	4	5	126
Lom	743	0	8	29	16	30	31	1	3	118
Oryahovo	678	0	8	31	18	30	31	2	3	123
Svishtov	554	0	6	28	15	29	27	2	0	107
Ruse	495	0	7	31	17	30	31	4	0	120
Silistra	375	2	7	31	19	30	31	15	1	136
Sector		4	45	179	102	179	181	28	12	730

Critical stations of the year 2025

Critical stations of the year 2025
Station	countries	days below LDC	station-days with data	%
Veliko Gradište	Serbia	232	365	64%
Banatska Palanka	Serbia	147	365	40%
Silistra	Bulgaria	136	365	37%
Calafat	Romania	127	364	35%
Oltenița	Romania	127	364	35%

The daily series uses the first reading of each day.