Classification for the fished main stem of the River Burn at Masham / Swinton — EA waterbody 'Burn from Leighton Beck to River Ure' (GB104027069310), Ure Middle and Lower operational catchment, Swale Ure Nidd and Ouse Upper management catchment, Humber river basin district. Latest EA data (updated 17 March 2025), Cycle 3 2022: Moderate ecological status, held at Moderate since 2019. Heavily modified water body sitting within the North Pennine Moors SAC/SPA. The step down from earlier Good classifications is driven by the fish element (RNAG: surface-water abstraction affecting flow) plus a phosphate 'suspect data' reason-for-deterioration; invertebrates, macrophytes and the other physico-chemical elements are High/Good. Chemical 'Fail' reflects the England-wide ubiquitous-substance failure (mercury and PBDE in biota — measures delivered, awaiting recovery), not a Burn-specific pollution event; the 2022 cycle itself records chemical as 'does not require assessment'. Classifying monitoring sites include Burn at Masham (Badger Lane Bridge) and Burn at Swinton Saw Mill Race. Note: the prior entry pointed at GB104027068800 (Ings Goit from Source to Burneston Beck), a separate small waterbody in the Swale catchment, not the Burn — corrected 2026-06-18.

EA (England) · GB104027069310