December 30, 2015
Granted you will need ArcGIS or another fancy program to download and view the data. It was a nice XMAS gift to see that LA County Department of Public Works has enhanced their information website to include park trails.
As a real estate broker specializing in rural and equestrian properties, I frequent the LA County Data Portal to see the location of everything from Significant Ecological Areas (SEA) to flood zones. If I choose, I could fine the Tsunami Inundation Areas. I could locate all the active water wells in LA County - which may come in handy when LVMWD shuts us off completely. In short, there is not much you can't find on this site.