A Rain Garden or "bioretention basin" is a vegetated depression in an urban landscape ... The first is, what design storm event is going to be used and what is the drainage area. These considerations ...

If a rain chain is not installed correctly it can cause drainage issues ... Decorative pebbles, or this vintage-style copper ...

Precipitation - Rain, hail, sleet or snow which is input to the drainage basin system. Evapotranspiration - A combination of water evaporated from land and water surfaces, including vegetation ...