The first thing to remember when recovering from flooding is to BE SAFE! Make sure you wear protective clothing, including sturdy shoes or boots, long pants or coveralls, head and eye protection. 

Remember that floodwater can contain dangerous chemicals and pollutants, animals and insects, sewage, harmful bacteria, sharp object and other debris.

Before you start any clean-up or repair activities, use your phone to take pictures inside and outside to document the damage. When you find additional damage, behind walls or under floors, take pictures of that damage as well. You'll need these when makinig an insurance claim and/or applying for local, state or federal aid or loans.

The US Environmental Protection Agency has extensive information on flood cleanup. 

The Centers for Disease Control has clean-up tips, including how to minimize the danger from mold

TEAM RUBICON offers a good checklist for getting started with flood clean-up

The Cleaning Institute has advice on how to clean the kitchen, food items, and clothing

Here's specific food safety after flooding from North Carolina State University

Food and water safety information from the FDA

A food safety checklist from Oklahoma State University

Extensive information from the State of Tennessee about clean-ups from water-related incidents 

Specific information from the University of Minnesota on what needs to be removed during flood demolition and clean-up

FEMA also has information on flood clean-up

Water well safety from the EPA and Penn State University

Septic System Safety after floods

Well safety from the University of Illinois

What can be saved and what should be thrown away

What can be salvaged after a flood event?

How to preserve and save wet books