CountyStreams

This data is replaced by Streams - Overview, with the exceptioon of irrigation canals and ditches. Stream, river, and irrigation network which includes County BOC / Development Services approved "Class 1" and "Class 2" planning designation.本数据集由《溪流总览》（Streams - Overview）替代，灌溉渠与排水沟除外。其所涵盖的溪流、河流及灌溉网络，包含经县政务委员会（County BOC）或开发服务部门（Development Services）批准的"Class 1"与"Class 2"规划类别。