Several independent lines of evidence indicate there is current water/ice in the near equatorial Tharsis region on Mars:

Current glaciers in Tharsis?
Posted by Robert Clark (68.81.141.219) on 11/23/2002 7:26:23 AM
http://habitablezone.com/space/messages/26942.html

Paper online that argues Mars "dark streaks" are liquid water related.
Posted by Robert Clark (147.31.4.2) on 11/25/2002 9:55:04 AM
http://habitablezone.com/space/messages/27040.html

Mars planetary scientist Peter Mouginis-Mark also concluded water/ice in Tharsis extends into geologically recent times:

Title: Recent Water Release in the Tharsis Region of Mars
Authors: Mouginis-Mark, P. J.
Journal: Abstracts of the Lunar and Planetary Science Conference, volume 20, page 727, (1989)
"The fluvial channels identified here demonstrate that melt water release took place in isolated areas within northwestern Tharsis over a very extended period of martian history, and includes episodes that post-date the emplacement of some of the youngest lava flows on the planet. While the origin and physical setting of the water remains unclear, these observations lend additional support to three popular views of the volatile history of Mars: 1) that ice lenses may have been preserved for extended periods at shallow depth over much of Mars, including the near-equatorial latitudes; 2) that _in certain very specific localities_ Mars may have been a wet planet until geologically recent times; and 3) that local igneous activity most likely served as a catalyst for melt water release at the surface."
http://adsabs.harvard.edu/cgi-bin/bib_query?1989LPI....20..727M [full text]

This report gives coordinates where apparently recent water-cut channels are found. This is based on 25-210 m/pixel resolution Viking images. Perhaps someone can find at these coordinates the corresponding images at the higher resolution provided by MGS:

http://marsglobalsurveyor.com/

More detailed discussion in this paper in Icarus:

Title: Recent water release in the Tharsis region of Mars
Authors: Mouginis-Mark, P. J.
Journal: Icarus (ISSN 0019-1035), vol. 84, April 1990, p. 362-373.
http://adsabs.harvard.edu/cgi-bin/bib_query?1990Icar...84..362M [abstract]

Bob Clark