Be able to drain inland lakes and breached pits

Playing Insula Mortis and thinking again it would be nice to either build a dam on each side of a body of water and then pump out the new made lake,,, or fix a leak in your pit and the pump it out if breached(done that twice now lol)
Maybe a rubber hose connection to existing pump or new (trash) pump that allows shallower and various levels, could have a disadvantage that its slow and fuel hungry.
For my current game I would damn each side of sand run divided by water and then mine sand.
My only other option is to back fill to remove water and the re dig
Also if I do backfill inland lake or damned off area the water should rise with no where to go and cause grief a flood with damage maybe.
Not a game programmer , water level may be difficult to control but if not I see digging a hole and filling it with water an option to (reserviors of fresh water)
Just a thought