We have had a ton of rain the last 2 weeks with more forecasted next week so most of our local spots are dealing with significant flooding. What type of lure would you recommend for VERY muddy flooded waters?

Spinnerbait 

Specific colors or any color do? Never fished flood waters.

White and or chartruse is normally a good choice, or black.  someone just posted the same question lol.  Try fishing extremely shallow,  if they don't want the spinner bait Ive had good luck using using a paddletail swimbait same colors

Great Question!  I believe the best lure for VERY muddy flooded water is a spinnerbait.   Typically a chartreuse or chart./white 1/2 oz double gold or copper (size #4 & #5 or larger) colorado bladed spinnerbait will get attention under these conditions.  I have found fish to relate around bushes logs, rocks or docks and fishing the spinnerbait near them can get some great strikes.  I would also recommend a matching grub or worm type trailer for added movement to attract attention.