Water quality - Operative evalution biological quality of small sream by saprobity index of macrozoobenthos community

This technical document establishes a comprehensive methodology for assessing the biological quality of small streams and rivers. It focuses specifically on the utilization of large benthic macroinvertebrate communities as key indicators for evaluating water health. The guidelines provide detailed procedures for sampling, identification, and data analysis to determine the ecological status of aquatic environments. By analyzing the diversity, abundance, and taxonomic composition of these bottom-dwelling organisms, the document enables a systematic operational assessment of water bodies. This approach allows for the identification of pollution impacts and the overall health of the stream ecosystem through biological monitoring. The framework ensures consistency in evaluating water quality across different small watercourses. It defines specific metrics and thresholds to classify the condition of the water based on the observed biological communities. This standardized process supports environmental management and conservation efforts by providing a reliable tool for monitoring stream integrity over time.