Freshwater gastropods are important components of aquatic ecosystems yet little is known of their distribution and abundance in most states. To clarify historical species presence in Nebraska, I created a database from literature and museum records to catalog each species of freshwater gastropod. Records provided a list of more than 80 provisional species of freshwater snails in the state. I then evaluated each species for possible misidentification and/or synonyms based on known geographic ranges and systematic studies thereby reducing the number of species expected to be present in Nebraska to 31, including one non-indigenous species. I suspect eight species are rare based on the number of records.