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 2015, most days below LDC were in September

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.

11%

37%

53%

26%

42%

20%

days below LDC% of station-days

Sector: Germany · 9 stations

Sector: Germany — Navigation windows 2015
Station	RKM	Jul	Aug	Sep	Oct	Nov	Dec	days below LDC
Oberndorf	2397.4	18	23	24	23	20	13	121
Regensburg Eiserne Brücke	2379.3	24	24	24	22	20	9	123
Schwabelweis	2376.5	25	24	14	11	17	9	100
Pfatter	2350.7	5	13	15	17	18	4	72
Pfelling	2305.5	17	22	23	16	20	2	100
Deggendorf	2284.4	15	23	24	20	20	5	107
Hofkirchen	2256.9	13	21	20	15	20	2	91
Vilshofen	2249.5	3	12	12	10	10	0	47
Passau Donau	2226.7	0	1	10	13	22	18	64
Sector		120	163	166	147	167	62	825

Sector: Austria · 9 stations

Sector: Austria — Navigation windows 2015
Station	RKM	Jan	Aug	Sep	Oct	Nov	Dec	days below LDC
Achleiten	2223.05	1	1	9	14	24	24	73
Wilhering	2144	0	0	0	0	0	0	0
Mauthausen	2110	0	0	0	0	0	0	0
Grein	2079	0	0	0	0	0	0	0
Ybbs	2058.8	0	0	0	0	0	0	0
Kienstock	2015	0	0	0	4	20	11	35
Bärndorf	1976	0	0	0	0	0	0	0
Korneuburg	1941	0	0	0	0	4	2	6
Wildungsmauer	1894	0	1	7	7	22	17	54
Sector		1	2	16	25	70	54	168

Sector: Slovakia · 3 stations

Sector: Slovakia — Navigation windows 2015
Station	RKM	Aug	Sep	Oct	Nov	Dec	days below LDC
Devín	1879	0	6	7	22	9	44
Bratislava	1868.75	0	0	0	0	0	0
Medveďov	1806.3	11	20	18	26	22	97
Sector		11	26	25	48	31	141

Sector: Hungary · 19 stations

Sector: Hungary — Navigation windows 2015
Station	RKM	Jul	Aug	Sep	Oct	Nov	Dec	days below LDC
Nagybajcs	1801.01	0	5	14	14	26	18	77
Gönyű	1790.55	0	0	8	8	20	13	49
Komárom	1768.35	0	13	17	14	24	18	86
Esztergom	1718.65	0	10	18	9	21	15	73
Szob	1707.2	0	13	19	12	22	16	82
Nagymaros	1694.6	0	10	16	9	22	14	71
Vác	1679.5	0	11	19	11	22	15	78
Óbuda	1654	0	0	8	8	18	5	39
Budapest	1646.5	0	4	16	9	20	11	60
Budafok	1636.9	0	2	12	9	20	8	51
Ercsi	1613.2	·	·	·	·	·	·	0
Adony	1598.11	0	0	0	0	0	0	0
Dunaújváros	1580.6	0	0	12	9	19	9	49
Dunaföldvár	1560.6	0	12	18	10	22	17	79
Paks	1531.3	0	12	20	12	24	18	86
Dombori	1506.8	0	0	9	9	19	4	41
Baja	1478.7	0	11	19	10	19	10	69
Duna Dunaszekcső	1460	0	1	14	9	17	3	44
Duna Mohács	1446	0	9	20	9	18	9	65
Sector		0	113	259	171	353	203	1099

Sector: Croatia · 5 stations

Sector: Croatia — Navigation windows 2015
Station	RKM	Aug	Sep	Oct	Nov	Dec	days below LDC
Batina	1424.6	3	15	8	16	5	47
Aljmaš	1380.25	0	0	0	0	1	1
Dalj	1353.7	0	0	0	0	2	2
Vukovar	1333.4	0	0	0	0	2	2
Ilok	1298.7	0	5	4	7	2	18
Sector		3	20	12	23	12	70

Sector: Serbia · 12 stations

Sector: Serbia — Navigation windows 2015
Station	RKM	Jan	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	days below LDC
Bezdan	1425	0	0	0	0	0	0	5	16	8	17	7	53
Apatin	1401	0	0	0	0	0	0	3	15	7	16	8	49
Bogojevo	1367	0	0	0	0	0	0	0	0	0	0	1	1
Bačka Palanka	1298	0	0	0	0	·	0	0	3	4	8	2	17
Novi Sad	1255	0	0	0	0	0	0	3	18	5	11	3	40
Slankamen	1216	0	0	0	0	0	0	8	20	6	7	2	43
Zemun	1173	0	0	0	0	0	4	11	23	6	7	3	54
Pančevo	1154	0	0	0	0	0	11	17	24	8	11	4	75
Smederevo	1116	0	0	3	19	7	12	21	26	6	13	11	118
Banatska Palanka	1076	8	0	10	31	16	22	28	29	9	21	20	194
Veliko Gradište	1059	11	8	16	31	16	12	19	25	11	15	13	177
Golubac	1042	4	0	12	31	15	0	0	0	0	0	0	62
Sector		23	8	41	112	54	61	115	199	70	126	74	883

Sector: Romania · 13 stations

Sector: Romania — Navigation windows 2015
Station	RKM	Jul	Aug	Sep	Oct	Nov	Dec	days below LDC
Calafat	795	6	21	27	9	9	3	75
Bechet	679	6	25	30	12	10	5	88
Corabia	630	5	27	30	14	9	0	85
Giurgiu	493	3	18	23	4	8	0	56
Oltenița	430	0	12	21	4	9	0	46
Călărași	370	2	24	23	6	6	0	61
Cernavodă	300	1	25	24	6	3	0	59
Hârșova	253	0	14	23	7	5	0	49
Brăila	170	2	31	30	8	6	0	77
Galați	150	3	31	30	9	7	0	80
Isaccea	103	0	13	20	7	7	0	47
Tulcea	71	0	10	27	8	6	0	51
Sulina	0	18	22	0	0	0	0	40
Sector		46	273	308	94	85	8	814

Sector: Bulgaria · 6 stations

Sector: Bulgaria — Navigation windows 2015
Station	RKM	Jul	Aug	Sep	Oct	Nov	Dec	days below LDC
Novo Selo	833	11	28	30	11	13	8	101
Lom	743	6	25	30	13	10	4	88
Oryahovo	678	5	23	29	10	10	5	82
Svishtov	554	4	24	30	8	10	4	80
Ruse	495	4	26	29	9	9	0	77
Silistra	375	3	27	28	6	8	0	72
Sector		33	153	176	57	60	21	500

Sector: Ukraine · 3 stations

Sector: Ukraine — Navigation windows 2015
Station	RKM	Jul	Aug	Sep	Oct	Nov	Dec	days below LDC
Reni	127.1	5	31	30	10	7	3	86
Izmail	93.6	4	27	30	9	9	4	83
Vylkove	18	0	0	1	4	12	5	22
Sector		9	58	61	23	28	12	191

Critical stations of the year 2015

Critical stations of the year 2015
Station	countries	days below LDC	station-days with data	%
Banatska Palanka	Serbia	194	365	53%
Veliko Gradište	Serbia	177	365	48%
Regensburg Eiserne Brücke	Germany	123	365	34%
Oberndorf	Germany	121	365	33%
Smederevo	Serbia	118	365	32%

The daily series uses the first reading of each day.