Nearmap generate high res terrain maps as part of their orthorectification process. These are comparable to the accuracy of LIDAR data which is pretty impressive (approx 15cm accuracy). They use a photogrammetric process, with the added advantage of having a huge number of photos that enables them to reduce the errors derived from standard photogrammetry practices.
It would be a no brainer for Nearmap to be able to provide terrain data to a standard suitable for producing high quality flood maps.
Check out some pics put together by others using some of their data. You'll need to scroll towards the bottom of the page at http://andrewharvey4.wordpress.com/
Scoz
IPR Price at posting:
10.0¢ Sentiment: ST Buy Disclosure: Held
