This started as a personal itch. I do hydrology research, and every study I've done began the same way: a week of writing download scripts before touching any science. One script for the US data, a different one for the UK, another for France, each portal with its own API, its own units, its own weird date column. At some point I realised I'd written basically the same script seven times for seven countries.

So over the past few months I built the thing I kept wishing existed: one map with every public gauge I could reach, about 62,000 across the US, Australia, the UK, France, Taiwan, Germany and Ireland. You click a gauge and get its record, a flood frequency curve with confidence bounds (GEV and Log-Pearson III, since someone will ask), flow duration and a trend test. Click anywhere that isn't a gauge and you get the climate and the upstream catchment of that spot instead.

The part I'm weirdly proud of: it all runs inside your browser tab. Actual Python, through Pyodide. I can't afford to run servers, so there's no server, and that means no account, no key, nothing to install for you either.

Rough edges, honestly: the flood analysis wants at least 10 full years of record, and if a gauge doesn't have that it just tells you no instead of fudging it. The German and Irish feeds only serve about a month of history. And the rainfall-runoff model isn't tuned for really big basins yet.

Try it: https://rekin226-aquascope-explorer.static.hf.space

Code is MIT, and it's the browser front end of a Python package you can pip install: https://github.com/Rekin226/aquascope

If your country's agency isn't on the map, tell me which one and I'll have a go at it.

I figured that this subreddit may be relative to my question, I was keen on becoming a hydro surveyor but when I saw some people on here talking about it they were saying it’s boring, anyone that’s in the field of work that can give me the harsh reality of the job. Thanks.