There was encampment there, maybe they just did their washing.

A work order has been assigned

I alerted Susan Schwartz (Friends of Five Creeks). She found the cause:

"There was a water-main break at Leroy near LeConte, fixed by EB MUD late in the day. This was almost certainly the cause of the whitish cloudiness (very fine mud that stays suspended for a long time). Not good, because chloramines go into the creek. But at least not oil!"

Thanks for the feedback!

Happy Apple - you're welcome. Friends of Five Creeks is an excellent resource for anything creek related. Thanks for posting the issue and keeping an eye on our precious creeks.

Resolved by the City of Berkeley