This Home Assistant integration started as integration for the Länderübergreifendes Hochwasser Portal (LHP), but due to the fact that the LHP locked their formerly open API in July 2023 this integration was rewritten the query the 16 state portals to get all information. The positive side effect, now more pegel are available, because the different state portals didn't report all their pegel to the LHP. The negativ side effect, some of the state portals need to be queried by web scraping and therefore need to be adjusted if the portal's design changes.

• ✔️ Value mostly available. Check individual state portal because not all stream gauges report all values.
• ❌ Value generally yet not available.

• Not all stream gauges report all three values. If one or more values are unavailable check official site if stream gauge is down or if not which values are reported.
• Level reports the actual water level (in German Pegelstand or colloquially Wasserstand). A value in centimetres, starting from 0 cm = Pegelnullpunktshöhe.
• Stage reports the actual warning stage (in German depending on ferderal state e.g. Meldestufe in Bavaria, Alarmstufe in Brandenburg). A number between 0 (=no flood) and 4 (= very large flood).
• Flow reports the actual flow rate (in German Abfluss or Durchfluss). A value in m³/s.

• Ensure that HACS is installed
• Search for and install the "hochwasserportal" integration
• Restart Home Assistant

• Copy the sources from ROOT_OF_THIS_REPO/custom_components/hochwasserportal to YOUR_HA_INSTALLATION/config/custom_components/hochwasserportal
• Restart Home Assistant

• The integration can only be configured by using config flow.
• Add the integration by pressing the "+ADD INTEGRATION" on the Settings - Integrations page and select "Länderübergreifendes Hochwasser Portal" from the drop-down menu.
• Enter a valid pegel-ID. A full list of valid pegels can be found here.
• For multiple locations, just repeat with each pegel-ID.