I'll see if I can get a friend to make a digital chart of my DO2 levels next week. As for a photo, I have not tried to figure how to post a photo yet, but will soon. Before we bought the property I contacted the Ontario Ministry of Natural Resources to get the oldest arial (sp?) photo and the most recent one. The oldest was in 1957 and the most recent 1987, both showed the pond as being about the same size.

Have Pond, Want to Fish