Pool Assessments

Nineteen lock and dam structures divide the Ohio River into 20 segments or pools. Each year, the ORSANCO Biological Survey Crews sample fish, macroinvertebrates and water quality parameters in selected pools. Data from these pool surveys is assessed and an assessment is prepared for the selected pools which describes its overall condition. Over the course of several years, each Ohio River pool is assessed multiple times.

These Ohio River pools are named for the lock and dam that is downstream of that pool of water. The assessments that ORSANCO creates are then named after the appropriate Ohio River pool. The assessments are available for download under Files.

A map of the Ohio River locks and dams is provided by the US Army Corp of Engineers, which manages the locks and dams: Ohio River locks and dams.

Files