UKCEH digital river network of Great Britain web map service

This is a web map service of the UKCEH digital river network of Great Britain (1:50,000). It is a river centreline network, based originally on OS 1:50,000 mapping. There are four layers: rivers; canals; surface pipes (man-made channels such as aqueducts and leats) and miscellaneous channels (including estuary and lake centre-lines and some underground channels).本数据集为英国生态与水文研究中心（UKCEH）制作的大不列颠岛1:5万数字河网网络地图服务。其核心为河网中心线网络，最初基于英国地形测量局（Ordnance Survey，缩写OS）1:5万地形图构建。该服务包含四个图层：河流、运河、地表管道（即渡槽、引水渠等人工渠道）以及杂类渠道（涵盖河口与湖泊中心线及部分地下河道）。