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What's new
- 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
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- 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
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- Swedish contour maps
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- 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
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About
Hydrodynamic Engine – Soil infiltration parameters
In this section we list the soil infiltration parameters used by various parts of the SCALGO Live system. For instance, some, or all, of these are used in the Flash Flood Map with infiltration and drainage and in the hydrodynamic integration. We refer to the documentation of those analyses for more information about how and why the soil parameters are used.
Horton parameters
We use the Horton infiltration equation for modeling infiltration, and the table below lists the Horton parameters for the generalized soil types used in SCALGO Live.
To see how the soil types in your country have been mapped to these generalized soil types, please consult the Flash Flood Map white paper linked to in the country specific part of this manual. Note that not all countries have this available at this time. Please contact us if you have questions about availability for your country.
We have split the Horton parameters into "High compaction" and "Low compaction" groups, these groups are based on the land cover map and are defined later in this section. This allows us to select a different set of infiltration parameters for a particular soil type depending on whether it's e.g. in a shallow or dense vegetation area.
Soil type | High compaction | Low compaction | ||||
fc | f0 | k | fc | f0 | k | |
Rocks and boulders | 500 | 1000 | 5 | 2000 | 5000 | 5 |
Gravel | 500 | 1000 | 5 | 2000 | 5000 | 5 |
Coarse sand | 30 | 120 | 5 | 1000 | 4000 | 5 |
Fine sand | 25 | 100 | 5 | 500 | 2000 | 5 |
Coarse sand with clay | 21 | 85 | 5 | 85 | 150 | 5 |
Fine sand with clay | 20 | 80 | 5 | 50 | 130 | 5 |
Coarse clay with sand | 12 | 50 | 5 | 30 | 120 | 5 |
Fine clay with sand | 9 | 47 | 6 | 25 | 100 | 4 |
Clay | 5 | 20 | 5 | 20 | 50 | 5 |
Fine clay | 0,5 | 2 | 5 | 2 | 20 | 5 |
Very fine clay | 0,01 | 0,1 | 5 | 0 | 1 | 5 |
Silt | 20 | 80 | 5 | 50 | 130 | 5 |
Gyttja/peat | 21 | 85 | 5 | 85 | 150 | 5 |
Bedrock | 0 | 0 | 5 | 0 | 0 | 5 |
Table: Horton parameters for the generalized soil types used in SCALGO Live
Grouping into high/low compaction
The land cover type of a given location decides whether we use the high or low compaction Horton parameters for that location, the table below details how we map each land cover type to a compaction degree.
Land cover type |
Compaction degree |
Note |
Bare land |
High |
|
Shallow vegetation |
High |
|
Dense vegetation |
Low |
|
Fields |
High |
|
Unpaved roads |
High |
If the native soil type has higher infiltration rates than coarse clay with sand, the cell is applied parameters for coarse clay with sand (assuming this better represents the infiltration through the paving material) |
Bare rock |
N/A |
All rainfall is turned to runoff, zero infiltration |
Snow/ice |
N/A |
All rainfall is turned to runoff, zero infiltration |
Table: Soil compaction degrees assigned to different land cover types.