It can be exasperating to look out and see your yard under water. Typically, yards that get flooded do so because of their proximity to a stream or larger body of water overflowing its banks, and there is not much you can do until the floods recede. Sometimes, a flood can be caused by heavy rain pooling in the lower part of your yard, and you can use a garden hose to drain off the excess water.
Find the lowest part of your yard where the water is accumulating. You can either walk through the flooded area and mark the spot that comes up the highest on you, or you can take a guess where the deepest water might be.
Set your hose into the deepest water and let it fill with water until the air pockets have been removed. You want to create a siphon effect and to do that, the hose needs to be filled with water. If the hose is floating, you know there are still large sections filled with air so methodically push the hose down in a circular pattern until it sits on the ground under the water.
Move one end of the hose to a low area such as a driveway, drainage ditch or any other area where the ground is lower than at the deepest part of your flooded area. When you move the hose, keep the end tightly crimped before you lift it up from the water to hold the water in the hose.
Pull the end of the hose down as far as you can while keeping the other end in the deepest part of the water. Uncrimp the hose and allow the water to flow downward from the hose. This will create a suction on the hose, pulling the water from the flooded area into the hose and down to the lower area. You should see a steady stream of water exiting the hose.
Allow time for the water to drain from the yard. It might take more than a day if the flooding was severe.