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RIVPACS

River Invertebrate Prediction and Classification System (RIVPACS) is a system for assessing water quality in freshwater rivers based on the macro-invertebrate species found at the survey site. The species found at the survey sites collectively make up the species assemblage for that site and are the basis for a statistical comparison between survey sites and reference sites.Reference sites usually represent the best conditions possible for different types of river habitat within the region or area under study.