MHO -
1 - Get another 100' of discharge hose for the pumps.
I've seen pics of your house, get the hose to reach as close to the pond (or anything further downhill) as you can.
2 - The ground is saturated - that may take a week or more to drain, even if no more rain is added.
3 - Pump what you can, with or without electricity.
I have 2 Honda generators (3000 watts) that each can run two pumps plus a few lights and stuff. The Coleman type things run fine in a pinch, but they don't seem to last more than a summer. Though I'm guessing that All the rental shops within 20 miles are out of generators.
Though if you're really creative, one of those Harley's can pump water with a belt off the back tire, but it may overheat
4 - Wait - and explain to the wife that nothing will help right now (easier said than done)
That's really all you can do.
Be Thankful that your electrician didn't place any wiring closer than 2 feet from the basement floor. (obviously you still have power - though I would still shut off all breakers to the basement)
The mud and junk will still be there on Friday or later.
I've been spending that past 2 weeks here...
Mostly monitoring... most houses need another week for water levels to decline.
Roseau MN Flood 2004