%0 Dataset %T National 1:250000 three-level River Basin data set %J National Cryosphere Desert Data Center %I National Cryosphere Desert Data Center(www.ncdc.ac.cn) %U http://www.ncdc.ac.cn/portal/metadata/4f518dc4-4963-4ab4-b7e0-b5feb49d53e0 %W NCDC %R 10.12072/ncdc.nieer.db3109.2023 %A Shen yongping %K Water resources division;water system;watershed boundary;watershed division;national Lake Basin basic data;China %X This data set is China's 1:250000 three-level watershed zoning data in 2002, including three-level watershed zoning boundary, watershed zoning name and watershed code information. It is commonly used national water resources zoning data (water resources zoning is relatively fixed within a period of time with a certain mandatory zoning model, so as to facilitate the adoption of a unified basis for all water conservancy planning in a relatively long period of time This information).