You don't need a PM on this one. The lake was closed this year, along with Anderson and Leland, because of blue-green algae blooms that were toxic. While I doubt it's closed now, I haven't heard of it re-opening. The Jefferson County Parks department would know.
I have been wondering the same seeing as i have never fished it and i have been wanting to lately. But i heard same thing that those three lakes were closed but nothing else ever came up about them. I know that leland is open cause i floated it during that snow storm we had...no luck Any more info would be good seeing that i live so close to them.
Just checked in with Jeffco Environmental Health; Gibbs has a clean bill with them, and they've pulled their closure. HOWEVER, Jeffco Parks is keeping the lake closed because the all-clear from EH was not as clear as it could be; it was cautionary, apparently--the difference between being "perfectly safe" and "should be safe". Parks has taken a very conservative approach.
The good news is that the EH people have a new monitoring system, and Parks will be following that more closely. I wouldn't be surprised to find that the lake will open relatively soon.
I'm supposed to get an e-mail on the status of Gibbs' testing, and I will pass it on.
Just now got off the phone with the guy from Jeffco Parks. Gibbs might be open as early as next week; he said that Leland may open at that time as well. Both lakes fall into the safe category, but bureaucracy takes time...