The impact of last month's Bonnet Carre Spillway opening on Lake Pontchartrain is now being seen, with algae blooms developing in the lake much earlier than expected.

The oxygen-robbing algae puts the lake at risk of a fish kill.

"We're really going to have to watch the lake, probably until mid-June, to make sure we get through this," said Carlton Dufrechou of the Lake Pontchartrain Basin Foundation.

Lake Pontchartrain Basin Foundation's Carlton Dufrechou on the impact of algae blooms:

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Dufrechou says the rough weather expected for the next few days may help to break up the algee and keep oxygen levels up and prevent a large scale fish kill.