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Wrong. Take a look at this picture and, once again, you don't need to be a scientist to tell what is on it.

Correct. It is a lake!   And there is more in the full picture M0798

But, there is a lot more to see in this picture - a torrent, mud where the water has evaporated, clear signs of erosion where the water flows, the bank of another lake in the upper right corner, and ice in the lake (but not in the small pools) that makes me suspect that warmth - and water - come from underground, on Mars.

NASA MGC MOC M0798

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The low concentration of atmospheric water vapor, the small total atmospheric pressure, and sub-freezing temperatures are commonly cited as “proof” that liquid water cannot exist on the surface of Mars.  However, theoretical and empirical evidence dictate the opposite conclusion.  The regions in which water should exist in liquid form on Mars are those in which the temperature and pressure parameters lie within the envelope approximately defined by 0^o C to 12^o C (...)  The Pathfinder data showed that the surface temperature of Mars at the landing site rose well above freezing when the sun ascended.  A model providing about one percent moisture to the soil (approximately the same amount of moisture that supports microorganisms in the sand dunes of Death Valley, California) diurnally was created based on Viking and Pathfinder data on atmospheric water vapor content, atmospheric pressure and surface temperature.

 The model predicted that Martian water vapor would be concentrated near the planet’s surface.  A recent paper uses Images for Mars Pathfinder data to support this phenomenon upon which the model was predicated.  And, even more recently, images from the Mars Global Surveyor have been interpreted as strong evidence for current liquid water activity on the surface of Mars at numerous, widespread locations in latitudinal bands in both Northern and Southern hemispheres. Such sporadic incidents as reported could provide liquid water adding to that available from the atmosphere (to which it undoubtedly contributes) as proposed herein.  The new findings confirm the understanding of the physics controlling the phase of water as presented in this paper.

 An instance when the Viking 2 Lander footpad  temperature stalled at 0^oC under the rising sun suggested that frozen water in the soil beneath the footpad was absorbing the latent heat of fusion preparatory to melting into liquid phase.  Pathfinder measured the temperature of the near-surface atmosphere and found it to increase exponentially toward the ground.  This effect likely raises surface temperatures above freezing diurnally over wide geographic areas.  Viking images showing the continual presence over many days and months of visible ice cover support the moisture-producing model.  So do data showing that the atmosphere near the ground surface is diurnally saturated with water vapor.  When the Martian surface air over areas of ice is saturated in water vapor, and the temperature of the ice rises to 0ºC, ice must liquefy to be in equilibrium with the water vapor evolved immediately above it.  It seems likely that the Pathfinder-observed phenomenon of exponentially increasing atmospheric temperature with proximity to the surface also obtains in areas of Mars where surface ice has been observed.  If so, frozen water on, or in, the soil must enter the liquid phase when the temperature rises to 0ºC.  As long as the total atmospheric pressure exceeds 6.1 mb, the thin layer of water vapor above the ice will reach its triple point pressure.  Sublimation of the ice cannot occur because of the overpressure; nor can boiling until the water temperature exceeds about 12ºC.  Thus, surface ice and water frozen in soil could liquefy diurnally over wide regions.  (extracted from http://www.biospherics.com/mars/mars/whitepaper.htm)

This one is huge - a hundred meters high. There is not much fluid coming from the top, but the tracks are evident. Notice that more than falling the water (if it is water) is leaking. Also, the water is not coming from a river, but from the ground itself  supporting the theory of the permafrost. 
Look at the enlargement.