This is just the beginning of this trail flooding event.
Some of the extended high-water periods of past years have temporarily reshaped the cycling community by isolating riders or forcing them to change their routine due to trail and bridge closures. It really made for some fun pick-up rides with folks that you know or have seen around but don't normally ride with.
Be careful. Look out for snakes if you ride through water. I didn't see any snakes, but I did see a lot of bugs being flooded out of the grass and a big carp swimming next to the trail.