A study of the Arroyo Seco river began in 2005 but was dropped. It’s back to explore connectivity, habitat restoration.

Geologists say they've seen no movement in the last day and they no longer believe the landslide, should it come down, is big enough to dam up the Arroyo Seco River and lead to flooding upstream ...

Officials say there is a risk of a landslide above Arroyo Seco Road at milepost 5 which could block the road and potentially cause upstream flooding.

It's "Museums of the Arroyo Day," a free-to-all event that spotlights six august and eye-catching locations that are just steps from the iconic arroyo.

Don’t plan on driving this Sunday on the Arroyo Seco Parkway. The stretch of the 110 Freeway that runs thru South Pasadena and Northeast Los Angeles will be occupied by pedestrians and ...

The 134 Freeway bridge reflecting off the Arroyo Seco river in Pasadena, photographed Tuesday, Dec. 13, 2008. A plan by the Los Angeles County Board of Supervisors to re-start a long-delayed study of ...