Flood Damage Prevention Methods

Protecting your home against flood damage is far less expensive than repairing damage, and after the nation witnessed and/or experienced the horror left in the path of Hurricane Katrina, most are quicker to be preventative, and though in levee failure situation of that natural disaster, even the most detailed prevention would not have halted the tragedy, most situations are not catastrophic, and a few relatively inexpensive hazard mitigations can save your home and your belongings in the event of flood conditions.
Start on the outside of your home with the intent of stopping water from even getting into your residence. If we are in the midst of another Deity invoked great flood or another Hurricane Katrina, an ounce of prevention is worth nothing, but in most circumstances, some minor adjustments can be made to combat the water.
Beginning with the most minor repair, be sure to take notice of leaks, cracks, and incurring water damage to your home, fix it promptly. Water spots on the ceiling, cracks in the foundation, and cracks of any sort anywhere in the home are open places for water to flow. Water is a natural force that will find entry, and allowing these things to go without repair are open invitations for entry into your home.
Moving on to the outside of your home, make certain that you maintain your gutters. Check them annually, especially before the rainy season in your area, for cracks, holes, missing connectors, or just plain wear and tear. Replace all needed parts, and periodically clean out debris. Clogged gutters will prevent them from doing their job and can lead to flood damage, creating a run off of water from your roof that can easily saturate your yard, especially the area close to your house. 
Once the area is saturated around the house, nature will force itself into areas that can hold moisture, and that area will be inside of your home. It is also important to check your neighborhood’s storm drains. If they are filled with debris, water will back up on your streets and then, guess where? Even though the city is ultimately responsible for the storm drains, do yourself and your neighbors the favor of keeping an eye on them.
If flooding is a major concern on and around your land, consider building a flood wall. This wall will keep runoff water from flowing into your house, and even though it may seem costly, it surly is less expensive than repairing flood damage and rebuilding repeatedly.