Statistics
Statistics by country and year
- 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.
Irrigation season 2024: Romania spent the longest below LDC, 18 % of days
Irrigation season (April–September)
Station-days below LDC in the irrigation season, by country and year, against the average of the other years; the longest uninterrupted spells below LDC.
| countries | station-days in season | below LDC in season | % | vs. average |
|---|---|---|---|---|
| Germany | 1,647 | 26 | 2% | -13 pp |
| Austria | 915 | 0 | 0% | -1 pp |
| Slovakia | 549 | 1 | 0% | -3 pp |
| Hungary | 2,010 | 8 | 0% | -2 pp |
| Croatia | 915 | 2 | 0% | -1 pp |
| Serbia | 2,196 | 206 | 9% | -2 pp |
| Romania | 2,379 | 421 | 18% | +6 pp |
| Bulgaria | 1,098 | 203 | 18% | +13 pp |
Longest spells below LDC
Uninterrupted periods of at least 5 days below LDC, by station.
| Station | countries | From | To | days |
|---|---|---|---|---|
| Silistra | Bulgaria | 2024-08-08 | 2024-09-20 | 44 |
| Oltenița | Romania | 2024-08-09 | 2024-09-20 | 43 |
| Isaccea | Romania | 2024-08-11 | 2024-09-21 | 42 |
| Veliko Gradište | Serbia | 2024-09-02 | 2024-09-25 | 24 |
| Brăila | Romania | 2024-08-12 | 2024-09-03 | 23 |
| Veliko Gradište | Serbia | 2024-11-05 | 2024-11-27 | 23 |
| Galați | Romania | 2024-08-13 | 2024-09-03 | 22 |
| Hârșova | Romania | 2024-08-13 | 2024-09-02 | 21 |
| Călărași | Romania | 2024-08-13 | 2024-09-02 | 21 |
| Banatska Palanka | Serbia | 2024-09-02 | 2024-09-22 | 21 |
The daily series uses the first reading of each day.