Groundwater vulnerability map: the Vulnerability Scale
Description
The map of the vulnerability of the groundwater of the Flemish Region can be defined as a map of the level of risk of contamination of the groundwater in the upper water layer by substances penetrating the ground from the soil, taking into account only static parameters. This map can later serve as a basis for a more detailed map, which can also include dynamic and hydrochemical factors. However, where the top recoverable aquifer is naturally salinized (>> The vulnerability scale Based on the above factors, a vulnerability scale has been drawn up. Five degrees of vulnerability are defined, each represented by its own color on the listed map. The vulnerability scale is as follows: • Extremely vulnerable (red on map): * A.a.1.: Chalk, limestone, sandstone, uncoated marl, with an unsaturated area of 10 m or less than 10 m; *B.a.1.: Gravel, uncoated, with an unsaturated area of 10 m or less than 10 m. • Very vulnerable (orange on map): *A.a.2.: Chalk, limestone, sandstone, marl, uncoated, with an unsaturated area exceeding 10 m; *B.a.2.: Uncoated gravel with an unsaturated area of more than 10 m; *C.a.1.: Sand, uncoated, with an unsaturated area of 10 m or less than 10 m. • Vulnerable (yellow on map): *A.b.: Chalk, limestone, sandstone, marl, with a loamy coating; *B.B.: Gravel, with a loamy coating; *C.a.2.: Sand, uncoated, with an unsaturated zone of more than 10 m. • Moderately vulnerable (light green on map): *A.c.: Chalk, limestone, sandstone, marl, with a clayey coating; *B.c.: Gravel with a clayey coating; *C.b.: Sand with a loamy coating; *D.a.1.: Uncoated mud-bearing or clay-bearing sand with an unsaturated area of 10 m or less than 10 m; *D.a.2.: Uncoated mud-bearing or clay-bearing sand with an unsaturated area of more than 10 m. • Low vulnerability (dark green on map): *C.C.: Sand with a clayy coating; *D.b.: clay-bearing or clay-bearing sand with a loamy coating; *D.c.: Clay-bearing or clay-bearing sand with a clayy coating.
Resources
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https://metadata.vlaanderen.be/srv/dut/catalog.search#/metadata/bd22091e-9b59-4533-b0b4-e3f2005fb0f5 |
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https://metadata.vlaanderen.be/srv/dut/catalog.search#/metadata/bd22091e-9b59-4533-b0b4-e3f2005fb0f5 |
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https://metadata.vlaanderen.be/srv/dut/catalog.search#/metadata/bd22091e-9b59-4533-b0b4-e3f2005fb0f5 |
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25 |
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https://metadata.vlaanderen.be/srv/dut/catalog.search#/metadata/bd22091e-9b59-4533-b0b4-e3f2005fb0f5 |
Tags
- vmm
- vlaanderen
- hydrogeologie
- grondwaterbescherming
- ondergrond
- dov
- databank-ondergrond-vlaanderen