"One couple actually went for a swim in the cold Lagoon waters."
Talk about a cold swim... I know the feeling! I took a swim in the Lagoon in the middle of December several years back. Of course any water in California was warmer than ANY water back in Northern Utah during that time of year. I even have a picture of the event. Check out picture #1 on this page from my MSN photo albums:
http://groups.msn.com/MeadFamilyAdventures/deepcreekhotsprings.msnw?albumlist=2
I hope to get to So. Cal sometime soon to make some more magic and photo events at Deep Creek!