Accumulation of pressures that may cause significant changes in the salinity regime of the Levantine-Balear Demarcation (EM LEVA PRE Salinity)

To identify those areas of the Levantine-Balear Demarcation whose saline regime can be significantly altered, a semi-quantitative index has been developed that takes into account the elements detailed below. Initially, the following 5x5 minute mesh cells have been selected:
- Those containing any discharge of brine from a plant with a production capacity > 10,000 m3/day
- Those located less than 5 km from a sewage treatment plant
- Those located less than 5 km from the mouth of a potentially altered river
Once all the elements have been integrated, the index has been calculated using the following formula:
SALIN REGIME MODIFICATION INDEX = 1[EDAR that does not need to report to the PRTR] + 2 [EDAR that reports to the PRTR] + 3[Desalination plants with production of less than 60,000 m3/day] + 4[Desalination plants with production of more than 60,000 m3/day + mouths of potentially altered rivers] + 5*[outflows of the main rivers of the basins with the greatest alteration of flows]
Finally, everything has been added, being the resulting range of values:
Very High: 9 to 10
High: 6 to 8
Medium: 4 to 5
Low: 1 to 3
Very Low: 0