Working repository for the OGC Hydrology Domain Working Group.

The content lives on the wiki: https://github.com/opengeospatial/hydro-dwg/wiki

Edit pages there, not here. See the wiki's Contributing page for how to add pages, attach files, and report problems.

• The wiki itself, at the GitHub Wiki URL above. Backed by the separate hydro-dwg.wiki.git repo that GitHub provisions automatically.
• The wiki-docs orphan branch on this repo: destination for new non-image attachments (PDFs, presentations, schemas, etc.). See its README.
• The twiki-archive/ directory: the one-time TWiki → markdown import that seeded the wiki in May 2026. Source files and conversion scripts, kept for reproducibility. See twiki-archive/README.md.

Legacy binary attachments imported from the original TWiki live in the companion repo opengeospatial/hydro-dwg-wiki-docs; they are not maintained here.