Waters suitable for life fish

This resource verifies the compliance of fresh surface waters designated as suitable for the life of fish. The regions designate stretches of watercourses and lake areas that require protection or improvement in order to be suitable for the life of fish, salmonids and cyprinids. The indicator shall identify the number of watercourses or lakes, the length of the sections and the extent of the designated areas which, over a 12-month period and on the basis of a minimum sampling frequency, comply with the mandatory limits set for a selected group of chemical and physical parameters defined by the legislation. Since 2015, the number of designated sections has been reduced.本数据集用于验证被划定为适宜鱼类生存的淡水地表水的合规性。相关区域划定了需实施保护或改善工作，以适配鱼类、鲑科鱼类（salmonids）及鲤科鱼类（cyprinids）生存的河段与湖区范围。本指标将统计在12个月周期内、满足最低采样频次要求的前提下，符合法规所定义的一组选定化学与物理参数强制限值的河道或湖区数量、河段长度及划定区域面积。自2015年起，划定河段的数量已有所减少。