How low are Hungary’s rivers right now?

Today’s daily-mean water level at six major gauges, placed inside each gauge’s own 12-month range (18 Jul 2025 – 17 Jul 2026). Levels are centimetres above local gauge zero — negative values are normal at some gauges. Public OVF data retrieved by an AI agent through ovf-data-mcp. Operational data — preliminary, unchecked.

major gauges sit in the bottom tenth of their 12-month range today (17 Jul 2026)

Gauge · watercourse

Last 12 months

Position in 12-month range

Today

12-month range (min → max of daily means) today’s level daily mean, last 12 months

Data table

Gauge	Watercourse	Today (cm)	12-mo min (cm)	12-mo max (cm)	Position in range

How this page was made

An agent resolved one representative gauge per watercourse, then ran the same 12-month server-side aggregation for each:

vizugy stations search Szeged --watercourse Tisza     # … and 5 more lookups
vizugy observations aggregate surface:2275 --start 2025-07-18T00:00:00Z \
    --end 2026-07-18T00:00:00Z --interval daily --operation avg   # × 6 gauges

These commands are the only data source. The agent then merged the JSON responses and wrote this page’s HTML, CSS, and JavaScript itself — no chart libraries, no build step.

Source: Országos Vízügyi Főigazgatóság (OVF) via the public VRAQuery API · metric “Felszíni vízállás” (surface water level, cm), data type “operatív összefésült” · retrieved 2026-07-18 10:37 (UTC). “Position in range” compares today’s daily mean with the min–max of daily means over the past 12 months at the same gauge — it is a relative measure, not an official drought index. Operational values may be preliminary; for checked data follow OVF’s formal data-request process.