Update on the water...
We have soaked rugs, but very few wet books--mostly just splashed spines. Whew! (Of course, we are due for more rain this afternoon and evening!) The Reference area will be noisy for a few days as they try to dry out the rugs with vacuums and fans. Some sort of anti-microbial is also going to be sprayed around. But all the collection should still be accessible (and available for ILL copying for distance students).
I'll post again if anything else happens!
Update: For the curious, here are some pictures: