water, water everywhere

I’m standing on the shore of a flooded river, I see fish swimming everywhere. Then a giant fish, bigger and longer than a man is swimming in weaving circles near the opposite shore. I wade or fall into the water. And the giant fish comes after me. I keep spinning away but it keeps twisting back at me.
Walking along a flooded creek, below an overpass bridge I see a truck tire and rim floating by with a band saw sitting on top. I want to salvage stuff stuck in the muddy bank and floating past. So I step across a high hill in the middle of an island in the steam and sink into a bog of mud up past my knee. I step out of the muck and down the hill to the edge of the creek where the floating tire has come to rest against the shore. Jan is walking nearby.