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.

CountryRiver

Daily data from 1876 to 6 November 2026

Download this tab’s data (CSV)River: Hármas-Körös →

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.

River

Hármas-Körös

8 stations · Available series since 1901. · River page →

stations · Hármas-Körös
stations	countries	km	Minimum	Maximum
Gyoma1901–2026 · 37,652 station-days with data	HU	79.2	-116 cm3 August 1930	912 cm15 June 1970
Kisőrvető1989–2026 · 5,511 station-days with data	HU	61	-137 cm5 December 1994	804 cm11 April 2000
Szarvas1901–2026 · 27,337 station-days with data	HU	53.72	-136 cm24 October 1935	985 cm21 April 2006
Békésszentandrás duzzasztó felső1943–2026 · 30,240 station-days with data	HU	47.5	-172 cm8 October 1946	994 cm21 April 2006
Békésszentandrás duzzasztó alsó1943–2026 · 29,536 station-days with data	HU	47.48	-213 cm30 July 2022	994 cm21 April 2006
Kunszentmárton1901–2026 · 45,710 station-days with data	HU	21.17	-238 cm2 August 1946	1,041 cm21 April 2006
Bökény duzzasztó felső1946–2026 · 20,593 station-days with data	HU	5.64	-230 cm9 October 1946	1,076 cm21 April 2000
Bökény duzzasztó alsó1989–2026 · 13,821 station-days with data	HU	5.56	-128 cm24 September 2026	1,120 cm21 April 2006

The daily series uses the first reading of each day.