Freshwater.
Freshwater
Lake Maracaibo is saltwater, being an estuary rather than a true lake.
freshwater
Most lakes contain freshwater. From this fact, I'm assuming it is made out of freshwater, rather than saltwater.
Lake Huron
No, all LAKES are freshwater. OCEANS are saltwater. Lake Michigan is a freshwater lake, but the answer above is false. See, for example, http://en.wikipedia.org/wiki/Great_Salt_Lake or http://en.wikipedia.org/wiki/Lake
Fresh water
Lake Okeechobee is due to freashwater
Saltwater but with a hint of freshwater
Freash water
No. Lake water is freshwater and ocean water is saltwater.