HI Frank,,
One thing you might want to consider for future hikes is using either a GPS or smart phone to record your .gpx track. I use an iPhone app called "gps4cam" that will sync with my photos, and encode the lat/lon/alt info into the photo exif file. Then, you can see where the photo was taken on a map. Many applications support this (I use flickr).
What you see in your picture is not one of the "seeps". They are very obvious when you see them.
Regardless of your "exact" final position, you were very close to Iceberg Lake. By my measurement from the pool to Iceberg Lake was only 600 meters. You just have to go back:-)
