Boni Brewer, spokeswoman for Zone 7 Water Agency, sent us this photo of a couch and a mattress floating in the Arroyo Mocho.
Brewer said the water agency, which wholesales water to the city of Pleasanton, wants to call attention to problems that can be created when people dump unwanted items into the local arroyos.
"There are some serious ramifications to this kind of dumping, whether it was meant as a harmless prank or as a way to get rid of junk without going to the dump," she said. "Debris can cause bank erosion, flooding and interfere with stream gauging station readings, destroy habitat and divert public funds in this current economy."
The couch and mattress, which was located in the arroyo about 500 feet upstream from the Nob Hill Shopping Center off Santa Rita Road, are scheduled to be extracted by county crews called to come in for cleanup.