These are coastal, transitional, river and lake water bodies that have a High-Status Objective under the Water Framework Directive.

These objectives were set for water bodies during Water Framework Directive Characterisation for the 2nd Cycle and were published in Irelands River Basin Management Plan 2018-2021 on 17 April 2018. These water bodies have the ‘High Status Objective’ box ticked in CRM which this dataset pulls from.

https://data.gov.ie/dataset/high-status-objective-water-bodies?package_type=dataset