I can't help with the plant ID, but if you are up at the lake, can you regale us all with stories of what things are like there?

how is weather?
water levels?
Water quality, DO?
Did your grass clipping algae go away?
How are fish, scuds, salamanders, crayfish, they are all surviving?

meanwhile you took good pictures so i would think someone could chime in on plant ID. It is impressive to think that these plants may have survived the harsh weather conditions of last winter!