I've always had a problem assessing the best way to divert water. eg. a downspout runs onto the paver deck just installed. Is this acceptable if the slope of the deck is 1.5 - 2%, or do you extend it under the patio to the lawn. I know I would rather get it off the deck, do I use PVC to extend the downspout (or O pipe) under the deck and if so must it be 6" below base or will it be alright just under. Also, if the downspout can't come up to the lawn anywhere, does a drywell of stone wrapped in fabric suffice? If not then what? What can one get away with when it comes to a drywell and should it be a certain distance from the house? As you can see I could go with many questions on drainage. Any info on these things would be great, point me to a site, a book anything to better understand this topic.. Thanks in advance. I don't worry so much about the water, but the ice in the winter on walks etc. and just want the simplest way to get water away.