I spoke with the Rangers on Saturday, March 26th. They were taking the closed from Apr 1 - Sep 30 sign down from the bottom gate.
They told me that the water was too high and fast, and that they would continue to monitor it, and would close the trails when it got to a safe level for the toads.
I asked them their estimate of the time frame, but all they would tell me is that when I come to the lower parking lot; if the sign is not on the fence the trail is open / if the sign is on the fence then the trail is closed for the season.
They said I could call the forest office, but unfortunately the answer via the phone would more than likely be the standard closed from Apr 1 answer.
The said that the clear answer would be when the sign goes up on the lower gate. They also indicated that they had no plans to remove the sign on the top gate; so if you enter from the top, you're gambling on a citation. If you enter from the bottom with no sign on the fence, there will be no citation.
Pretty lame not to be able to call and get a definitive answer before going to the bottom gate, but it's the best answer they would give me.
So far I have kept parking at the bottom gate and when the sign is not there I ride in.
I plan on riding there this Saturday, so I'll post the current condition that afternoon.