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 1992, 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.

18%

32%

30%

days below LDC% of station-days

Sector: Austria · 7 stations

Sector: Austria — Navigation windows 1992
Station	RKM	Jan	Feb	Sep	Oct	days below LDC
Achleiten	2223.05	5	5	4	10	24
Wilhering	2144	0	0	0	0	0
Mauthausen	2110	0	0	0	0	0
Grein	2079	0	0	0	0	0
Ybbs	2058.8	0	0	0	0	0
Kienstock	2015	0	0	0	0	0
Bärndorf	1976	0	0	0	0	0
Sector		5	5	4	10	24

Sector: Hungary · 19 stations

Sector: Hungary — Navigation windows 1992
Station	RKM	Jan	Feb	Aug	Sep	Oct	Nov	days below LDC
Nagybajcs	1801.01	1	5	2	11	17	1	37
Gönyű	1790.55	1	6	13	15	21	1	57
Komárom	1768.35	0	0	11	12	21	0	44
Esztergom	1718.65	0	0	9	12	19	0	40
Szob	1707.2	0	0	0	0	0	0	0
Nagymaros	1694.6	0	0	0	10	16	0	26
Vác	1679.5	0	0	7	12	18	0	37
Óbuda	1654	0	0	0	8	12	0	20
Budapest	1646.5	0	0	0	10	12	0	22
Budafok	1636.9	0	0	0	5	7	0	12
Ercsi	1613.2	0	0	0	0	0	0	0
Adony	1598.11	0	0	0	0	0	0	0
Dunaújváros	1580.6	0	0	0	0	1	0	1
Dunaföldvár	1560.6	0	0	0	0	0	0	0
Paks	1531.3	0	0	0	6	11	0	17
Dombori	1506.8	0	0	0	6	13	0	19
Baja	1478.7	0	0	7	12	16	0	35
Duna Dunaszekcső	1460	0	0	0	3	6	0	9
Duna Mohács	1446	0	0	0	11	10	0	21
Sector		2	11	49	133	200	2	397

Sector: Bulgaria · 6 stations

Sector: Bulgaria — Navigation windows 1992
Station	RKM	Aug	Sep	Oct	days below LDC
Novo Selo	833	18	25	12	55
Lom	743	21	27	12	60
Oryahovo	678	25	28	13	66
Svishtov	554	20	27	14	61
Ruse	495	24	30	15	69
Silistra	375	25	30	18	73
Sector		133	167	84	384

Critical stations of the year 1992

Critical stations of the year 1992
Station	countries	days below LDC	station-days with data	%
Silistra	Bulgaria	73	366	20%
Ruse	Bulgaria	69	365	19%
Oryahovo	Bulgaria	66	365	18%
Svishtov	Bulgaria	61	366	17%
Lom	Bulgaria	60	366	16%

The daily series uses the first reading of each day.