During the project BIO_CLIC abiotic and biotic data of the rivers Pinka and Lafnitz were collected during the year 2012 until 2014 in order to analyse the present state of river morphology, riparian vegetation, riparian microclimate, fish species and benthic invertebrate abundance and diversity. This data was produced to be able to predict the near stream microclimate and stream water temperature until the end of the century, estimate the stress on aquatic organism and the ability of vegetation to mitigate this stress. Initially only stream water observations, predictions of the river Pinka and corresponding input data for extreme heat wave events used in Trimmel et al. (2016a) are available for download. Other parts of the data set may be included later after they have been published. More information on this dataset can be found in the Freshwater Metadatabase - FWM_8 (http://www.freshwatermetadata.eu/metadb/bf_mdb_view.php?entryID=FWM_8).