We recently had a drainage issue in the beds in front of the house addressed by having a contractor install a drainage system (multiple catch basins, interconnected and draining to the sides of the house). I'm going to cover the front beds with river rock. The only plantings are what's there now.....one large oak, a few Japanese maples, and a few low bushes. No more plantings will be added, maybe a few larger (1 man) boulders, any plantings will be potted. My question is, what size river rock to go with?? The ones in the pic are from a 4"-6" lot, and are there simply to hold the landscape fabric in place until I get the pins/staples in and tighten things up. Thought about making the swales (shallow, connecting to and running to the catch basins) into a "dry creek" look using different size/type of rock, but that's not practical with the way the various swales run. Right now, I'm thinking of just going with 1"-3" lots (or 2"-4", which I believe the local supplier carries) to cover the whole thing. I'd really appreciate any comments/suggestions [I kind of really did not want to do this myself, but my wife seemed to feel that I.....oops, we ...could do this....unfortunately, all of the good landscape contractors we could find are quite a distance away and, for reasons I understand, have minimum charges for these 'long distance' projects.....one was quite honest with me and said they could do it, but their minimum charge was well over what the project would cost if done locally].