Last week i talked a bit about how a green roof is one way to help manage stormwater runoff.
Roof runoff systems.
Install a rain barrel or cistern to catch stormwater runoff from roofs.
The system outlined below will walk you through the steps of determining your rain barrel sizes based on average roof runoff.
For sample purposes a 55 gallon barrel will be used.
Another simple and straightforward way is to make sure that the landscape of your garden is permeable including your hardscaping paths decks and driveways.
Use this water to irrigate garden plants.
Maximum allowable roof areas with various rainfall rates are listed in table 110 1 8 and table 1101 12 along with the required pipe sizes using this method it shall be permitted to interpolate between two listed rainfall rate columns inches per hour mm h.
This home just had a couple of these.
Use a shallow gravel filled trench to catch and slow runoff especially at the base of a slope or alongside a driveway or patio.
Also outlined are the steps to build your own rain barrel to collect water from your roof and downspout for all outdoor uses like watering and cleaning.
Storm drainage systems shall be permitted to be sized using the roof area served by each of the drainage system.