Yes, there are many. There are 37 rivers and 21 lakes in Tasmania. This is probably only the main ones.
lakes and rivers
No.
no
Yes
Ladafi
Looking in Google Earth, I see a number of rivers. I do not see any natural lakes, but there are several reservoirs, artificial lakes created by damming the rivers.
Yes
Yes, several.
Missouri
Danube or Váh.
YES
yes there are.