| Status | Code | Score | Description | |
| Epikarst | ||||
| Karstic morphology observed (pertaining to epikarst) Karstic morphology absent | E1 | 1 | Caves, swallow holes, dolines, karren fields, ruine-like relief, cuestas | |
| E2 | 2 | Intermediate zones situated along doline alignments, uvalas, dry valleys, canyons, poljes | ||
| E3 | 3 | The rest of the catchment | ||
| Protective Cover | ||||
|
| A. Soil resting directly onlime stone formations or on detrital formations with very high hydraulic conductivity* | B. Soil resting on >20 cm of low hydraulic conductivity geological formations** | ||
| Protective cover absent | P1 | 1 | 0 - 20 cm of soil | - |
| P2 | 2 | 20 - 100 cm of soil | 20 - 100 cm of soil and low hydraulic conductivity formations | |
| P3 | 3 | >1 m of soil | >1 m of soil and low hydraulic conductivity formations | |
| Protective cover important | P4 | 4 | - | >8 m of very low hydraulic conductivity formations or >6 m of very low hydraulic conductivity formations with >1 m of soil (point measurements necessary) |
| Infiltration Condition | ||||
| Concentrated infiltration Diffuse infiltration | I1 | 1 | Perennial or temporary swallow hole-bands and bed of temporary or permanent stream supplying swallow hole, infiltrating surficial flow-areas of the water course catchment containing artificial drainage. | |
| I2 | 2 | Areas of a water course catchment which are not artificially drained and where the slope is greater than 25% for meadows and pastures | ||
| I3 | 3 | Areas of a water course catchment which are not artificially drained and where the slope is less than 10% for ploughed (cultivated) areas and less than 25% for meadows and pastures Outside the catchment of a surface watercourse: bases of slopes and steep slopes (greater than 10% for ploughed (cultivated) areas and greater than 25% for meadows and pastures) where runoff water infiltrates | ||
| I4 | 4 | The rest of the catchment | ||
| Karst Development | ||||
| Well-developed karstic network | K1 | 1 | Well-developed karstic network with decimetre to metersized conduits with little fill and well interconnected | |
| Poorly developed karstic network | K2 | 2 | Poorly developed karstic network with poorly interconnected or in filled drains or conduits, or conduits of decimetre or smaller size | |
| Mixed or fissured aquifer | K3 | 3 | Porous media discharge zone with a possible protective influence-fissured non-karstic aquifer | |