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.

Low water by sector

The longest uninterrupted spell below LDC at any station in each Danube sector, with the record station, the affected stations, the full history and the comparison with the drought years 2003, 2015, 2018 and 2022.

33 days

5 days

1976 · consecutive days below LDCvs. reference years

Low water by sector 1976
Sector	consecutive days below LDC	Spell	record station	stations with low water	station-days below LDC	2003	2015	2018	2022
Austria	33	1976-12-25 – 1977-01-26	Wilhering	3	180	88 (-55)	21 (+12)	32 (+1)	9 (+24)
Bulgaria	5	1976-07-22 – 1976-07-26	Silistra	1	5	102 (-97)	39 (-34)	47 (-42)	88 (-83)

Reference years: 2003, 2015, 2018, 2022 (major Danube droughts). Δ = difference from the selected year; a missing year means no low-water spell in the available readings.

History by sector

History by sector
Sector	2026	2025	2024	2023	2022	2021	2020	2019
Germany	115	24	9	33	43	23	27	15
Austria	17	11	—	27	9	12	26	12
Slovakia	10	13	1	31	18	22	21	19
Hungary	124	57	4	31	20	24	15	17
Croatia	16	15	2	27	19	13	—	15
Serbia	108	51	24	51	74	54	26	25
Romania	132	80	58	36	75	28	9	51
Bulgaria	17	81	44	44	88	29	13	51
Ukraine	14	—	—	—	—	—	10	50

The daily series uses the first reading of each day.