Found this while looking for a map of drains in my area, and figured it would be useful to many others. Attached is a link to a downloadable map of a majority of the storm drains in the Ventura County area. Also, by clicking on the drain lines in Google Earth, you can find out how tall each tunnel is (useful for determining locations to explore). I have used this map many times and found it extremely useful. Hope you enjoy!
http://vcstormwate...ed-storm-drain-map