In addition to sites uncovered by drought (an increasingly common  phenomenon here in the western US), you might consider sites uncovered  for other reasons. 
  
  For example, Southern California Edison (a power company) has  hydroelectric systems in the high Sierra Nevada, taking advantage of  the steep face of the eastern Sierra. Each winter, the reservoirs are  drained, exposing sites previously below the waterline. Some of these  reservoirs or systems have been coming up for environmental  "recertification", prompting test excavations of the sites. This work  is done in the narrow window --- a few weeks --- between the draining  of the reservoir in fall and the predicted first snowfall (which  effectively closes trails in and out).
  
  Gwyn Alcock
  Riverside, California
  

Graham <[log in to unmask]> wrote:  Folks

In Australia, specifically SE Queensland we are in a particularly bad  
drought, to the point where here in Brisbane water restrictions are  
getting pretty severe and our main water supply is down to 20% capacity.

Despite the obvious doom and gloom this situation portends it also  
raises some unique opportunities for archaeologists investigating  
areas of land that have been for many years underwater. Is experience  
of working in these sorts of landscapes common? Is there a literature  
out there that deals with this sort of thing?

Sincerely
GrahamK
.....................................
Graham Knuckey PhD
ARCHAEO Cultural Heritage Services,
369 Waterworks Road, Ashgrove, 4060.
Queensland. AUSTRALIA.

E-mail - [log in to unmask]
www.archaeo.com.au
___________________

"This world is a great sculptor's shop. We are the statues and there  
is a rumour going around the shop that some of us are some day going  
to come to life.   C.S. Lewis.