Dossier
summer turnover
Coverage of summer turnover in the Nexus archive.
- Large number of fish turn up dead in Potomac River after heat wave
A large number of fish deaths, or 'fish kill,' have occurred in the Potomac River following a heat wave. Scientists attribute the event to a 'summer turnover' caused by mixing water layers reducing oxygen levels. Authorities confirmed no chemical spill or pollution and noted most fish deaths near Sycamore Island, upstream of a prior sewage incident.