b'15Classification of riparian delivery points for improvedspecification of mitigation measuresParker S1,hUallachin D1, Baggaley N2, Mellander P-E1,3, Wilkinson M2, Lilly A2 ,Baggio Compagnucci A2 and Stutter M21Crops, Environment and Land Use Programme, Teagasc, Johnstown Castle EnvironmentResearch Centre, Wexford, Co. Wexford, Ireland2The James Hutton Institute, Aberdeen, AB15 8QH, UK3Agricultural Catchments Programme, Teagasc, Johnstown Castle Environment ResearchCentre, Wexford, Co. Wexford, IrelandSources and pathways by which macronutrients (nitrogen and phosphorus) and sediment enter watercourses have traditionally been classified as being either point or diffuse, with agricultural sources typically classed as the latter. Increasingly, however, the idea of diffuse pollution is being replaced with the idea of multiple point sources. Whilst previous work has sought to identify the locations of these multiple point sources (to support greater targeting of mitigation measures), little research exists describing or classifying the variety of delivery points.An element of the Smarter BufferZ project (Irish EPA-funded) aims to classify differentmorphologies of the delivery pathways by which water crosses from edge of field to stream (e.g. cattle access points, pathways further enlarged by increased water flow, temporary versuspermanent points) to create a typology of delivery points. This will be achieved (in the initial phases) through in-situ assessment by catchment walks (including previously identified delivery points, and unidentified points). In order to increase coverage, it is hoped that a library oftypologies will be built with the aid of various stakeholders (e.g. landowners, catchmentscientists, agricultural advisors). It is anticipated that the findings will feed into the creation of easily understood diagnostic tools for farmers and agricultural advisors that can then be used to aid in the choice of appropriate measure to mitigate excess nutrient and sediment runoff.59'