Home / Standards / GB/T 46336.1-2025 GB/T 46336.1-2025 Active Guidelines for rivers and lakes happiness evaluation—Part 1: Rivers with a watershed area of 3000 km2 or less 幸福河湖评价导则 第1部分:流域面积3000 km2以下(含)河流 Standard Type GBT ICS 13.060.25 CCS P56 Status 现行 Issue Date 2025-10-05 Implementation 2026-05-01 Responsible Dept 水利部 Drafting Unit N/A