Yes there is some, I actually right now just came from searching and found some. Last summer I went to northern Cali up to Seattle and found MUCH more and bigger pieces there. I've only been to 3 beaches so far but so far I would say it's not worth the trip. Try Discovery Beach in Washington, I found it by the handfuls. Also there's another beach in southern Cali that's supposed to be one of the top US beaches for sea glass but I haven't been there.
Mar 23, 2011
Lake Superior Sea Glass by: Sue
I never heard about sea glass hunting at Lake Superior but do hear that Lake Erie has good findings!