A Fresh Set of Tools: New Information for Managing Fisheries During Changes in River Discharge

The Bonnet Carré spillway (BCS) is a flood-control structure along the Lower Mississippi River designed to prevent flooding in the city of New Orleans by diverting excess water into the nearby Lake Pontchartrain estuary. Alarmingly, the BCS was opened as many times over the past decade (2011–2020) as it had been over the six prior decades combined (1951–2010), with devastating effects on the estuary’s valuable fisheries. Because the BCS was rarely used in the past, there is little science-based guidance for state agencies to consult when trying to manage these events. In light of the unprecedented increase in BCS operation, this project will conduct research to understand (1) how opening the BCS affects Lake Pontchartrain estuary [...]