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

Office of Tangible Space was working on the renovation and expansion of a Greene and Greene–designed house in Altadena then ...

An Arroyo Seco couple and their dog were rescued when flood waters rose near their home and the bridge out was washed away.

Groups hope to one day bring back endangered steelhead trout to the Arroyo Seco. For now, they're trying to improve conditions for the existing freshwater trout.

In South County, the Arroyo Seco River near Soledad reached a height of 16.33 feet just after 10 a.m., surpassing its moderate flood stage by more than 2 feet.