- Spatial reference
- UTM 35N · WGS84
- Data package
- 9 organised categories
- Water scenarios
- 5 levels · 0.05–1 m
- Published accuracy
- RMSxy < 5 cm · RMSz < 10 cm
Consistent data for assessing a development site
The study brought terrain, drainage and rising-water information into one spatial reference. All data published for the project use UTM zone 35N, WGS84 datum.
The outcome was not simply an aerial image, but a nine-category technical package prepared for cartographic analysis, CAD/GIS work and documented development decisions.
Five water-rise steps referenced to the base level
The simulations modelled rises of 0.05 m, 0.10 m, 0.25 m, 0.50 m and 1.00 m above the 65.75 m maximum base-water level. The simulation used a 1 m-grid DTM and an orthophoto with 0.5 m pixels.
The 5 cm RGB orthophoto was a separate deliverable. Keeping this distinction avoids confusing the final product resolution with the raster base used for the simulations.
The nine delivered data categories
Files were grouped so the client could move from visual review to analysis and design.
- 1. Contour_Lines
- Contours at 0.25 m and 0.50 m intervals in SHP, DXF and DWG.
- 2. Drainage_Network
- Drainage network generated from the terrain model in SHP and DXF.
- 3. DSM
- Digital surface model in GeoTIFF with a 0.25 m grid.
- 4. DTM
- Digital terrain model: 0.25 m-grid GeoTIFF and 1 m-grid ASCII Grid.
- 5. Flooding_simulation
- Five TIF levels over a 1 m DTM and 0.5 m/pixel orthophoto; Water_Base_65.75m.dxf and maximum polygons Water_level_rise_0.5m-base65.75.dxf and Water_level_rise_1m-base65.75.dxf.
- 6. Limit
- The client’s initial boundary and the wider processing boundary in DXF.
- 7. Maps
- Overview orthophoto with 0.50 m contours and two A1 topographic maps in TIF/PDF at 1:4500.
- 8. Ortophoto5cm
- Georeferenced RGB orthophoto, uncompressed TIF, with 5 cm pixels.
- 9. Vector_data
- Vector data extracted from the orthophoto for the topographic maps.
Published figures must be read together with terrain conditions
The archive reports orthophoto RMSxy below 5 cm and digital terrain model RMSz below 10 cm.
It also notes that deviations may be larger in forest, wetland and riparian areas, where vegetation, water and limited access affect ground reconstruction. These figures describe the published project and are not a universal guarantee for every site.
Terrain model, topographic map and orthophoto simulation
All three plates are preserved and grouped by role: water scenarios and the topographic plan.
Terrain and water extent
The terrain model and orthophoto show the same scenario from two perspectives: the calculated level and the actual affected surface.
Topographic plan for analysis
The 1:4500 sheet combines contours, boundaries and visible features needed to read the site.
Public project results
The external folder preserves the files published by FAE Drones for reviewing the deliverable structure.
Open the public Dropbox archiveExternal link. Folder availability and structure are managed separately from this website.