Hi, Nancy Jean, welcome to BYC. The ducks you describe are very likely of two different breeds. The duck with the 'red face' is very likely a Muscovy and then of course you have the Pekin which is a mallard derived breed. I'm concerned that the lakes have been drained leaving the ducks more vulnerable to predation. I would not personally add more ducks to this precarious situation. If the present ducks could be captured and placed in a controlled environment, this would probably be the best situation.
The ducks are at risk - especially with the lakes drained. Even if they huddled together, that would not keep them safe, and may not keep them warm enough.
Do you or someone you know have room to take them in?
You can rescue them - but they would need a protected place.