TWDB/TNRIS is actively collecting highwater marks on past floods. The inventory is currently over 8000 but more highwater marks are needed. You can find the ones that are currently in the inventory at http://www.tnris.org/status-maps click on floodplain mapping tab. If you have any highwater marks in your community please send the information to email@example.com. Highwater marks help calibrate floodplain models, provide general information on flood history, and can be used in other ways. You can also send any questions you may have to the same address. Thanks for your consideration.
Stakeholders: Texas Water Development Board (TWDB/TNRIS)
Deliverables: point cloud (LAS), DEM, intensity (TIFF), hydro-flattening breaklines (.shp)
Expected Availability: March 2012