Quality of rivers vis-à-vis nitric nitrogen flows in Brittany

Analysis of nitrogen flows: specific annual flow rate (l/s/km2), annual flow of nitric nitrogen (kg N-NO3/year), annual specific flow of nitric nitrogen (kg N-NO3/ha/year), annual specific flow of water-weighted nitric nitrogen (kg N-NO3/ha/year) and hydraulicity, since 1995 in Brittany.

Sources: OFB (BD Naïades), AELB (BD OSUR), DREAL Bretagne (BD BEA, Corpep), MEDD (Hydrobank), IUEM (BD Ecoflux), UMR SAS-Agrocampus-INRA, 2020. Processing: Environment Observatory in Brittany.

Go further: consult the methodology and sources detailed in the datavisualisation "Nitrogen flux in Brittany: analysis of annual developments since 1995" by the EPO.