NASA and some other space agencies have already found some water on Mars, but, to my knowledge, the rovers never discovered any lakes or anything else significant. Logically, most of the water should be ice. Anyways, in the video here:
a man by the name of Jimmy Roberts attempts to analyze a photo by the Curiosity Rover. The original photo was taken in black and white. Here’s the image:
https://mars.jpl.nasa.gov/msl-raw-images/proj/msl/redops/ods/surface/sol/01352/opgs/edr/ncam/NLB_517524633EDR_F0541778NCAM00283M_.JPGIn his video he first re-edits the photo and adds color in himself (I think). I don’t think he ever tells us the actual method he used to get the genuine colors on the photo. In his colored photo, he points to a “lake” colored blue/grey. I don’t think the man believes that NASA is faking anything, but I think he does believe they’re hiding aliens and “ancient civilizations” on mars. He also, to my knowledge, believes that NASA is lying about scientific data concerning Mars’s atmosphere and such conspiracy theories like that. Looking at the original black and white photograph by Curiosity, I think it’s probably nothing more than the Martian ground or something like that.