Honestly, it depends on the way the rain falls. To drop in from Lilly you have to make sure the water under the bridge in Cassandra is runable. If it is, it's
Cassandra part I is coming into Cassanrda, "Festivle Park" is on your left. This starts with a class III drop into fast moving water over a fishing dam before going under a bridge. Flood walls surround you. It starts here and will end past the river left turn. After that it continues a bit fast until you go back into the forest with a nice little beach on river left. Lengthy class II/III rapid.
https://www.youtube.com/watch?v=lFH04NTE_gE