[Overtaxed]

Heh. Disconnecting them from what? The rain garden site sez to put the garden near where the downspout empties.

[LSAggie]

Disconnecting them from what?
From the radio ads she says the downspouts are connected to the storm sewers, which would then go into streams. I know in LS we had problems with builders connecting the downspouts to the sanitary sewers which would then cause the treatment plants to overflow during periods of high rains. At one time we had a program to 'smoke the sewers" and then look for houses where the smoke was coming up out of the gutters. A lot of people complained when they had to remove the connection, they didn't want that rain on ~their~ property.