Water on Mars has been successfully photographed by Mr. Ellen Roper and it has landed on the famous "Astronomy Picture of the Day" site.
The site reveals how wonderfully easy it is to observe / photograph water on mars! Why? Even you can do it! Refer the link below for details:
http://antwrp.gsfc.nasa.gov/apod/ap050401.html
LOL!
Humour adds fun to astronomy, doesn't it?