For [a site], work the
drainage: where water arrives,
where it goes, what a heavy
storm does, who downstream is
affected, and what changes if
the surface is paved.

Where Does the Water Go?

Follows the water off the site and onto someone else's.

Prompt

For [a site or development], work through the drainage: where water arrives, where it goes, what a heavy storm does, and which downstream party is affected. Include what changes if the surface becomes impermeable.