State regulators are putting in place new rules to capture much of stormwater and dry season urban runoff before it pollutes coastal waters. In Ventura County, those rules calls for changes in the way gutters and culverts direct rainfall runoff.
Ventura County's new rules now promote low-impact development – ways to mimic natural pre-pavement conditions. Such rules change the shape of the pipe – or get rid of it entirely.
In other words: if it didn’t run off before people got here, it shouldn’t run off now. Read more.
Also see here.