Mussell Surveys

Under its statewide ecological survey task order with Ohio Department of Transportation (ODOT), Davey was selected to perform large-scale mussel surveys for several ODOT projects around Ohio. Transportation improvement projects impacting streams that may harbor or have known populations of mussels are required to perform surveys and/or relocations to comply with federal and state regulations. Davey supplied trained biologists for each ODOT project and worked with a federal and state permitted malacologist as the projects’ lead investigator. Upon the completion of each mussel survey, Davey provided ODOT with a report of the survey findings.


Davey performed three ODOT mussel surveys in Ohio in 2013: BUT-73-16.82 (PID 75625) in the Great Miami River in Butler County; LAK-90-23.42 (PID 23456) in the Grand River in Lake County; and MIA-75-12.90+13.15+13.28 (PID 87534) in the Great Miami River in Miami County.


These mussel surveys identified a number of state species of concern, and state and federally threatened or endangered species. These included the creek heelsplitter (Lasmigona compressa), elktoe (Alasmidonta marginata), kidneyshell (Ptychobranchus fasciolaris), purple wartyback (Cyclonaias tuberculata), round pigtoe (Pleurobema sintoxia), snuffbox (Epioblasma triquetra), and wavy-rayed lampmussel (Lampsilis fasciola).


Due to the effect that the presence of a listed species can have on the timeline of a project, Davey communicated regularly with ODOT to provide updates on the status and results of each survey in order to keep the project on schedule.