FireYak helps fire departments quickly find the nearest usable water source (e.g. fire hydrants, suction points, water tanks, fire water ponds, fire stations) based on OpenStreetMap data.

All water source data comes from the community-driven project OpenStreetMap. If a hydrant or water source is missing or incorrect, you can add, edit or delete it directly within the app — no need to leave FireYak.

Web: app.fireyak.org The web app is a Progressive Web App (PWA) and can be installed to the home screen on most modern browsers.

• Displays nearby water sources using OpenStreetMap data:
  • emergency=fire_hydrant
  • emergency=water_tank
  • emergency=suction_point
  • emergency=fire_water_pond
  • amenity=fire_station
• Different icons for hydrants, suction points, water tanks, ponds and fire stations.
• Map view and last position are restored on reopen.
• Dark mode support.

When you tap/click a marker, FireYak shows:

• Hydrant / water source type (pillar, underground, wall, pond, etc.)
• Pipe diameter, pressure, flow capacity / flow rate
• Couplings (type, diameters)
• Water source type (main, pond, stream, river, lake, tank, well, etc.)
• Capacity/volume where tagged
• Reference number, operator, name and address (if available)
• Access, notes, survey date, coordinates and OSM ID

You can:

• Open the object directly on openstreetmap.org.
• Open the object in the OSM editor to improve the data.
• Start navigation to the location (mobile & desktop).
• Share a link to the marker.

You can manage water sources directly within the app — all changes are synced to OpenStreetMap in real time.

Add a new marker:

• Press the + button at the bottom right.
• Choose the type: fire hydrant, suction point or water tank.
• Fill in details (diameter, pressure, flow, couplings, operator, etc.) and save.

Edit an existing marker:

• Tap a marker, then tap the edit button in the info panel.
• Update any field — leave a field empty to remove it from OpenStreetMap.

Delete a marker:

• Open the edit panel for a marker and tap the trash icon.
• A confirmation dialog ensures nothing is deleted by accident.

All operations require an OpenStreetMap account (OAuth2 login is built in). Changes are uploaded immediately and include a changeset comment referencing FireYak.

If photos exist on Wikimedia Commons using the naming pattern Fire-fighting-facility node-<OSM_ID>, FireYak shows them in a full-screen gallery for the selected marker.

• Use your current location to list the nearest water sources (e.g. nearest hydrants).
• Distance display in meters/kilometres.
• Rough estimation of the required number of B-hoses based on configured hose length.
• Quick selection of a nearby source to see full details.

FireYak includes a relay pump / supply pipe calculator:

• Set:
  • Fire object (target point)
  • Suction point (water source)
  • Optional waypoints (route via streets, terrain, etc.)
• Uses elevation data to estimate:
  • Real (3D) hose distance along the route
  • Elevation difference between suction and fire object
• Calculates:
  • Approximate number of B-hoses required
  • Number and positions of intermediate pumps
  • For each pump and for the fire object:
    • Distance from suction point
    • Elevation gain
    • Pressure at the pump / inlet

Configuration:

• Adjustable:
  • Output pressure
  • Minimum input pressure
  • Pressure loss per meter (depending on flow rate)

• English
• German

npm install

npm run dev

Then open the printed URL (typically http://localhost:5173) in your browser.

# web only
npm run build

# web + sync native platforms
npm run buildAndSync

npm run lint

The Android project lives in the android/ directory and can be built with Gradle / Android Studio. The iOS project lives in the ios/ directory and can be built with Xcode.

If you find FireYak useful, please consider supporting it:

You can also:

• Star the project on GitHub
• Report issues and improvement ideas
• Contribute code or documentation