""Grab samples collected in Tolka Estuary as part of the Water Framework Directive Benthic monitoring programme. For each grab sample collected this dataset contains: - lists and abundance of benthic species >1mm, -sediment particle size analysis (PSA), -Folk (1954) sediment classification, -and an estimate of organic matter (LOI). Parameters include abundance of X in X."" Benthic macro-invertebrates monitoring under the Water Framework Directive in association with the Environmental Protection Agency.