Danube at Budapest — water level, last 12 months

Daily mean with the daily min–max range, gauge Budapest (1026) on the Duna, from public OVF hydrological data retrieved by an AI agent through ovf-data-mcp. Operational data — preliminary, unchecked.

Daily water level at Budapest (cm)

Line: daily mean · band: daily min–max range · 18 Jul 2025 – 17 Jul 2026 · hover or focus + arrow keys for values

Data table — 366 daily rows

Date	Mean (cm)	Min (cm)	Max (cm)

How this page was made

An agent asked ovf-data-mcp for the station, checked coverage, then ran three server-side aggregations — no scraping, no manual downloads:

vizugy stations search Budapest --watercourse Duna
vizugy observations aggregate surface:1026 --start 2025-07-18T00:00:00Z \
    --end 2026-07-18T00:00:00Z --interval daily --operation avg   # + min, max

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 · station Budapest (1026), Duna, metric “Felszíni vízállás” (surface water level, cm), data type “operatív összefésült” · retrieved 2026-07-18 10:28 (UTC). Aggregation buckets follow upstream hydrological-day boundaries. Operational values may be preliminary; for checked data follow OVF’s formal data-request process.