Answer

<p>Hi & thanks for using JustAnswer.com.</p><p>Give the water somewhere else to go. You can dig a trench around the patio. From that trench, dig a trench to some point lower than your patio. On the bottom of these trenches place 4" of gravel. On top of the gravel place a 4" drainage pipe ( has slots cut in it to receive water). Around the pipe put a landscape cloth (they make socks to slip over the pipe). Last fill the remaining few inches with more gravel. </p><p>The water will fall into the gravel & pipe before it can reach the patio. The pipe will conduct it to the lower elevation you selected. The water will be happy to have a low spot to run to, and your patio will be happy it no longer gets flooded.</p><p> </p><p><strong>I hope that this information was helpful to you. If it was please remember to click "</strong><strong>ACCEPT</strong><strong>" on your screen to make sure that I am paid for my efforts. By clicking </strong><strong>ACCEPT</strong><strong> you are not giving up your ability to ask more questions pertaining to this subject, and I will be happy to respond to these as well.</strong> <strong>Please take a moment and leave feedback, it is very important!</strong></p>