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    This polygon file contains river catchments in which live pearl mussels have been recorded. The catchment limits are based on sub-basin boundaries from the EPA Water Framework Directive geodatabase (filename: EPA_WFD_v3.mdb), and catchments are divided up into three...
    This polyline feature dataset contains stretches of river, mainly located within the SAC catchments for which Sub-basin management plans have been written. The lines are mapped to coincide with EPA River Segments , and contain river stretches of suitable pearl mussel habitat.
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