If you’re gonna adapt your locality and all, you better know where you are in relation to how water drains into, through and beyond your community. This is your watershed. For some of us it’s a lot more recognizable than for others.

Thanks to WorldChanging I’ve been turned on to Inforain, a source of topgraphical watershed mapping for the Pacific Northwest. I was actually surprised a bit by how their map of my local watershed wrapped around the topography of the Marin Headlands.

Inforain of the Mt. Tamalpais watershed

Nothing quite gives me a sense of place like the bird’s eye view and a map. That’s one of the things I lSouthern Marin Countyove about living next to a 2500-foot “mountain.” I can hike or drive to the summit and see the big picture of where I live.

The Web has revolutionized mapping, and planning for climate change impacts gets a huge benefit from having access to the new mapping capabilities. Check out this participatory view of Marin County provided by Wikimapia. Yep, you can add stuff – define a place, describe it, add photos to it.

Here’s another example of a participatory local map with a special application for marking locations of interest. It’s called Oakland Crimespotting. Imagine such a map with the locations indicating significant places relevant to climate change impact planning instead of crimes committed.