The database presented here contains general and specific information for the Sorraia river basin in Portugal, compiled whithin the context of the FP7 MARS Project. The information is based on multiple datasets from multiple sources and contains data on hydrology, climate, water quality, geomorphological pressures and several biotic elements, including fish, macroinvertebrates, macrophytes and diatoms. The main source of information is the Portuguese Environmental Agency (APA) from the Ministry of the Environment, Territory and Energy. More information on this dataset can be found in the Freshwater Metadatabase - MARS_10 (http://www.freshwatermetadata.eu/metadb/bf_mdb_view.php?entryID=MARS_10).