http://asterweb.jpl.nasa.gov/gallery-detail.asp?name=powell
The gray area depicts the shrunken, reduced 2007 lake extent compared to the extended, larger black area in 2001.
NASA ASTER image
Originally uploaded in Cutting Edge:Courses:Geomorphology.
Image 10915 is a 154 by 192 pixel JPEG
Uploaded:
Nov7 07