v4 adds 72-hour surge forecasting
Tideline pulls tide gauges, river sensors and satellite data onto one open map — built for coastal councils who need a warning system, not a research grant to run one.
Deployed at
The toolkit
Most flood-mapping software is licensed to national agencies. Councils and small cities are left refreshing a PDF.
01
Tide gauges, river sensors and satellite imagery merge into a single layer, so you're not tab-switching between three dashboards during a surge.
02
The map caches fully offline. A council office with patchy internet during a storm still has the whole picture in front of it.
03
Every threshold, alert channel and map layer came from a real council asking for it, not a spec written in advance.
Point it at your gauges
Connect existing tide and river gauge feeds, or use the public data we already mirror.
Set your thresholds
Define what counts as a warning for each stretch of coastline you're watching.
Publish the map
Embed it on your council site or run it standalone — same toolkit either way.
docker run lmnfrs/tideline
Councils, civil defence units and river authorities run Tideline on hardware they already own. We'll help you wire up your first gauge for free.