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Belgium wallonia#100

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thiagovmdon wants to merge 3 commits intomainfrom
belgium-wallonia
Open

Belgium wallonia#100
thiagovmdon wants to merge 3 commits intomainfrom
belgium-wallonia

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Summary

Related to issue #99

Add Belgium-Wallonia support via the public SPW Hydrometrie KiWIS service.

This PR adds:

  • a new BelgiumWalloniaFetcher
  • package export wiring
  • fetcher documentation
  • cached station metadata
  • example usage
  • unit tests with sample KiWIS payloads

Data source

Supported variables

  • discharge_daily_mean
  • stage_daily_mean

Notes

The Wallonia service exposes daily data through KiWIS group-based time series discovery.

A date-boundary bug was also fixed during implementation:
daily values are timestamped at Brussels local midnight, so the query window now uses local day bounds converted to UTC before requesting data. This ensures the first requested day is not dropped when data exists.

@thiagovmdon thiagovmdon requested a review from kratzert as a code owner March 16, 2026 17:33
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