The best way to go about clearing your pool cover of debris and rain
water (maybe even melted snow) is to buy a sump pump. Which can run $30
and up and any pool store or home depot, walmart, lowes. But if you
dont have the money or time you can simply use your garden hose.

Place one end of your garden hose in the pool and the other on the
ground.
Warning: This can be gross if you do it wrong

make a tight fist around the end of the hose and start sucking on it
like a straw. This will start to pull water from the pool. When you
feel it coming, let go and place it on the ground. The gravity from the
top of the pool to the ground will continue the flow of water.

Once most of the water is off the cover you can use your pool skimmer
to remove any left over debris on top. The cover doesnt have to be
completely clean, but the less debris and water on the cover the
lighter it will be instead of putting the weight on your pool walls.

For More Information Visit
http://www.swimuniversity.com
http://www.niagarapool.com