Rain in Arvada & Patch Drainage

At my pumpkin patch we will get an average of 18 inches of precipitation a year.  In the last three days we have received 7 inches of rain.  Fortunately the pumpkin patch drains pretty well.  Four years ago a backhoe was taken to it and it was dug down 3-4 feet.  At the bottom I put down some gravel to help with the drainage.  Because of that the patch has faired pretty well in this 100 year storm.