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Spyder Solutions

Know where water goes before you build in its way.

Catchments, flow paths, runoff and flood risk modelled from terrain. Drainage designed for the rain that actually falls.

Scope my siteHow it works
Hydrology

Raise the rainfall to see flow concentrate.

A stream network traced from the terrain, from headwaters to the outlet, ordered by stream size, inside a dashed catchment boundary.

Questions it answers

  • Which plots flood in a heavy monsoon?

  • Where should the main drain run?

  • How big is the catchment above this site?

  • Where is the riverbank eroding?

What you receive

Files you can open in your own GIS or CAD software, plus a report that states method and dates.

  • Catchment boundaries and flow accumulation rasters
  • Drainage network extractionGeoPackage / SHP
  • Flood hazard map with return-period classes
  • Erosion change map
  • The terrain model used, so your engineers can check it

How it works

Part of Advanced Geospatial Engineering

  1. 1

    Build the terrain

    A bare-earth DTM from LiDAR, drone or satellite elevation, conditioned for flow.

  2. 2

    Trace the water

    Flow direction and accumulation define catchments and the drainage network.

  3. 3

    Simulate runoff

    Rainfall scenarios estimate runoff and the extent of flooding.

  4. 4

    Design and report

    Hazard classes, drain routes and erosion zones, with the model inputs attached.

Who uses it

Works with

Put hydrology to work on your site.

A KML, a sketch on a map or a district name is enough to start.

Scope my siteSpyderAtSolutions@gmail.com

We reply by email with questions, a method and a delivery list.