Data collected by Central Michigan University during surveys for Alasmidonta viridis in Michigan in the summer of 2022. Data was analyzed for completion of Gabrielle Sanfilippo's M.S. thesis for Central Michigan University's Department of Biology, submitted December 2023. The Excel spreadsheet contains two sheets: (1) "General" with general site survey data, including person hours surveyed, number of A. viridis and other mussel species found, and abiotic site measurements; and (2) "A. viridis indv" which contains data collected on A. viridis specimens, including length, width, height, and the etch given to each A. viridis specimen, and other data collected within a 1x1 meter quadrat centered around the A. viridis individual.