Open Rivers Network (ORN)

A free dataset providing connected, topologically-corrected watercourses in Great Britain. Open Rivers Network containing over 144,000 km of watercourses. This dataset is built upon a 2023 release of Open Rivers an Open dataset from the Ordnance Survey. The fully connected network was attributed with a range of geomorphological values and provides a framework for sampling and extracting information at site level. A secondary site layer mapping 500m spaced points across the entire network provides point based attribution for detailed river analysis.本免费数据集提供大不列颠境内经拓扑校正的连通水系。开放河流网络（Open Rivers Network）涵盖总长超过14.4万千米的水系。本数据集基于英国地形测量局（Ordnance Survey）2023年发布的开放数据集《Open Rivers》构建。该全连通网络已被赋予一系列地貌学属性，可为点位级的信息采样与提取提供支撑框架。此外，覆盖全网络、布设500米间隔点位的二级点位图层，可为精细化河流分析提供基于点位的属性赋值支持。