004 International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B4. Istanbul 2004 
6 CONCLUSION AND OUTLOOK 
The DEM25 has to be available in the year 2004. There- 
fore, a first release of the DEM is terminated for the third 
quarter of the year. The release will solve the biggest diffe- 
rence problems, but because of some data acquisition still 
in progress there are regions with a lower accuracy than the 
accuracy aimed at of +1 to +3 m. Within the next years the 
DEM will be improved more and more, because of promi- 
sed updates of the states. 
For calculating flooding predictions it is planned to sup- 
plement the DEM25 with a high-resolution DEM with an 
accuracy of at least 0,5 m for these possible flooding regi- 
ons. But for this project the specifications of the flooding 
ping areas and the accuracy needed have not been defined as yet. 
o 
REFERENCES 
AdV, 2001. AdV-MetalnformationSystem. 
http://www.atkis.de/metainfo (last accessed May 2004). 
Hovenbitzer, M., Kolb, W. and Schulz, B., 2004. Das 
DGM25-D - Stand, Konzept, Perspektiven. Mitteilungen 
des Bundesamtes für Kartographie und Geodäsie, Band 27, 
Frankfurt, Germany, to appear. 
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