HYMOS – Database of Hydromorphological Parameters
Type of result: S – Specialized Public Database
The database contains the following data:
- Surface Water Body Code
- Surface Water Body Reach Code
- Name of the Watercourse
- Surface Water Body Name
- Territorial Jurisdiction of the State Enterprise Povodí
- Supporting Type of Watercourses for Hydromorphological Status Assessment
- Merged Supporting Type of Watercourse for Hydromorphological Status Assessment
- Potential sediment input - from hillslopes to the channel (category)
- Categorized Valley Slope
- Confinement Index (category)
- Strahler Stream Order (category)
- Maximum Altitude of the Watercourse in the Reach
- Minimum Altitude of the Watercourse in the Reach
- Length of the Watercourse in the Reach [m]
- Average Channel Width in the Reach [m]
- Average Slope of the Watercourse in the Reach [‰]
- Floodplain Area in the Reach [ha]
- Dominant Land Use Category in the Reach
- Geomorphological Province
- X Coordinate of the Reach Start
- Y Coordinate of the Reach Start
- X Coordinate of the Reach End
- Y Coordinate of the Reach End
- Backwater (classification level)
- Migration Permeability (assessment class)
- Erodible Floodplain Area (assessment class)
- Connectivity of Valley Slopes and Riverbed (assessment class)
- Frequency and Extent of Floodplain Inundation (assessment class)
- Linear Extent of Functional Riparian Vegetation (assessment class)
- Use of Riparian Zone and Floodplain (assessment class)
Records can be sorted and filtered by each database item. Records can be exported in CSV or PDF format (as an overview card of parameters).
Detailed explanations of the meaning, calculation, and interpretation of individual items are provided in the Methodology for the Evaluation of the Hydromorphological Status of Water Bodies in the Czech Republic.
DOWNLOADS
Selected newly calculated parameters are also available as geodata. Data are downloadable in the national coordinate system S-JTSK (EPSG: 5514):
| Name | File | Size |
|---|---|---|
| Watercourses based on stream geometry @ZABAGED segmented into water bodies and reaches (segments) of water bodies and enriched with calculated hydromorphological assessment indicators | geopackage | 74 MB |
| Supporting Types of Watercourses – contains codes of merged supporting type (SP_type) and supporting type (P_type) | geopackage | 75 MB |
| Strahler Stream Order with Verified Order for Transboundary Streams | geopackage | 115 MB |
| Bank Lines Supplemented with Missing Sections of Water Bodies (polygons) | geopackage | 55 MB |
| Floodplain Delineation for Water Bodies | geopackage | 9 MB |
| Abiotic Typology of Streams for Fish Status Assessment Purposes | geopackage | 18 MB |
| Layers Created Within the Project in Geodatabase Format | Esri file geodatabase | 134 MB |
| Strahler Stream Order with Verified Order for Transboundary Streams (complete river network, update 03/2025) Note on content |
Esri shapefile | 132 MB |