A couple of months ago I mentioned the role out of the NRCS’s Web Soil Survey. Today we bring you a localized soil survey page for CA, AZ, an NV out of UC Davis’s California Soil Resource Lab. While portions of the interface are very similar to the NRCS’s product, their site does offer some additional tools missing in the WSS.
If I understand correctly, they also used MapServer for the backend as opposed to ArcIMS for the map product, which while it doesn’t offer some of the features of ArcIMS/Server out of the box, it is stable and openSource so there is always room to grow.
Thanks to Dylan for pointing this out.