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What's New
- National French high-resolution land cover map
- Work with multiple features simultaneously in the canvas
- Spill points on flash flood map and depression map
- New surface roughness (Manning) parameters for DynamicFlood
- Workspace and Modelspace sharing updates
- Regionally varying rain in DynamicFlood Sweden
- Veden imeytyminen nyt osana rankkasadeanalyysejä
- Use Scalgo Live anywhere in the world
- DynamicFlood: Live model speed info and regionally-varying rain events
- Sea-level rise: Download building flooding information
- Detailed contour maps and editable buildings in Workspaces
- New in Modelspaces: Explore hydrodynamic simulations and visualise the dynamics of flow velocity
- National German high-resolution land cover map
- Specify basins and protrusions by drawing their outer boundary
- Simplified path features
- National Norwegian high-resolution land cover map
- Organise and communicate on a digital canvas
- New sidebar to help organize your analyses and queries
- Sliding contours
- Ny skyfallsanalys och en ännu bättre marktäckekarta
- New land cover map for Finland
- Depths in the depression map
- New Danish land cover map with more classes
- National Swedish High-Resolution Impervious Surface Mapping
- Watershed tool updated with even better descriptions of catchment characteristics
- National Flash Flood Map with Infiltration and Drainage for Denmark
- Add your own WMS layers to SCALGO Live
- Enriched building data in Denmark
- National hydrological corrections and Land Cover for Poland
- National hydrological corrections for Norway
- Updated Impervious Surface Mapping for Denmark
- National hydrological corrections and updated local data for Finland
- Fast and intuitive tools to work with infiltration and land use
- Improvements to vector imports and exports
- National Danish groundwater model
- New Sweden high-resolution model
- New powerful depression map and more analyses visualization options
- Introducing Modelspaces: Get your hydrodynamic models into SCALGO Live
- Use case videos
- Access a EA flood maps inside SCALGO Live
- Improved map export
- New powerful ways to edit the elevation model
- Better coloring of flooding layers and sea-level depth filtering
- National Danish High-Resolution Impervious Surface Mapping
- National access for local and regional organizations
- Simpler, more powerful downloads
- Customize Layer Transparency
- Hydrological corrections and new data in Sweden
- Improved export functionality
- Access a wide range of authorative data inside SCALGO Live
- Importing VASP data
- Measure gradients, undo edits, and Norway updates
- New terrain edit features, soil balance information and much more...
- Browse historical orthophotos in SCALGO Live
- Emergency planning with sea-level rise from national forecast data
- Detailed information about watershed composition
- Better styling of imported vector layers
- New Danish Elevation Model
- Work with gradients in the profile widget
- Flood risk screening from rivers and flow paths
- New workspace tool: Raise and lower terrain uniformly
- Importing LandXML TINs, LAS point clouds
- New model in Sweden
- Side slopes on workspace features
- Drag and drop enhancements
- Swedish contour maps
- Subsurface basins and sewage drains in workspaces
- New Interface
- Volume information for watersheds and flow paths
- New powerful tool for emergency response and coastal flood prevention
- Denmark: New flash flood map
- Sweden: Geodatasamverkan setting for Swedish users
- Import custom terrain models
- New Hydrological Corrections
- Elevation contours now available
- Download orthophotos as JPEG and PNG
- Subsurface structures in workspace
- Sea-levels in terrain profiles
- Updated orthophotos
- Models and analysis update
- User interface updates
- User interface updates
- GeoDanmark/FOT data, Matrikelkortet now available
- New flash flood map
- Download of risk polygons
- Updated orthophotos
- Nationwide hydrology on the new DHM/2015 model now available
- New flash flood map computation available with watershed download
- DHM/2015 variants and sea-levels now available nationwide
- DHM/2015 now available nationwide
- Hydrology on the new DHM/2015 model now available
- New DHM/2015 Model - now with buildings
- New DHM Model
- Watershed Tool
- Ad hoc layers
- Nationwide contour maps for all countries
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About
What's New – New surface roughness (Manning) parameters for DynamicFlood
Oct 25, 2024
DynamicFlood computations need information about the surface roughness for each of the land cover classes available in the Scalgo Live land cover map. We use so-called Manning numbers to parameterize this. Today, we updated the Manning numbers for all countries where DynamicFlood is available, except Sweden which was recently updated independently. The new values reflect a generally more conservative approach to surface roughness.
The Mannings numbers can be seen in the surface roughness section of the documentation, but for your convenience we have replicated them below:
Land cover class | Manning's M |
Natural: | |
Unpaved road | 40 |
Bare land | 30 |
Shallow vegetation | 20 |
Dense vegetation | 5 |
Field | 20 |
Bare rock | 30 |
Snow/ice | 50 |
Railroad | 20 |
Artificial: | |
Building | 50 (not used) |
Paved road | 70 |
Other paved | 40 |
Water | 50 |
The values were chosen based on an evaluation and synthesis of relevant literature (Arcement, 1989, Papaioannou et al, 2018, HEC-RAS 2D User's Manual, N-V240 Vannhåndtering, MSB2260).
This change was also recorded in the DynamicFlood changelog.
How does this release affect your computations?
The new numbers will be applied to all new workspaces, created after the update. Workspaces created before the update will retain the previous numbers.
If you need to create a new workspace that uses the same numbers as an old workspace, you can import the Manning numbers from the old workspace (using the "+" icon under Select Manning in the Run hydrodynamic engine dialog).
Likewise, if you would like to update an old workspace to use the new numbers, you can import the numbers from a new workspace.