Eel survey records from estuaries around England and associated physical and environmental factors 1981-2018 dataset https://portal.medin.org.uk/portal/start.php?tpc=009_CEFAS9f16c10a-feee-4a5b-801e-5d8a6d2ccfed Data explored included long-term catches of eels in transitional and costal waters of England from 1981 to 2018 from the National Fish Populations Database, provided by the EA, from which we filtered data on adult eels in transitional waters as a final file to use in future analyses. The final csv file contains information on data owner, location of the survey site, specific site and survey IDs, survey specific date and associated information, GPS coordinates, survey method, species names, presence/absence data, count data, water body category, estuary name, transitional water body name and RBD name. The file also contains all the physical factors that were extracted from the numerous shapefiles provided by the EA or third parties (e.g. EMODnet Seabed Habitats, ESRI, British Oceanographic Data Centre). For the list of physical factors included please see 'Read Me' file. 20200409 20200330