• BREAKING NEWS ABC shows live and on-demand -- Download the WATCH ABC app!

Fall algae to blame for OC foul stench

November 1, 2009 12:00:00 AM PDT
A stinky situation is wafting over in Orange County.A fall algae bloom is sending a foul stench into the air.

The stinky air is happening in the Upper Oso Reservoir between Mission Viejo and Rancho Santa Margarita.

Experts say it's due to the recent cold weather spell that caused the warmer summer waters to sink down into the colder currents below and stir up the algae.