What's the big deal about it anyway? Sure, I don't like braggers as well but I also hate people who point it out and target them. Support, though you don't need the barriers on the map, just do /plotme done (I think thats the command look in the /plotme help section and look for something similar to that, it makes it so it locks the plot and stops crops from being destroyed, etc.) Also, just use ice for the river, then put glowstone on top of that and leave it like that for 10 minutes or so. Remove the glowstone and you got yourself a river.
Thanks for the support and suggestions Reborn, and I know the ice trick, I just wanted to use the glass because it looked nicer I thought. Also I just tested /plotme done and they made it so players don't have access to it anymore, it just says permission denied in red text :/
What I would do is put wool or glass beneath the water so it still has the effect you're kind of looking for ;p Rip, /plotme done was available to everyone before.. ;s