Flood Mapping - a DTM project

Compile all DTM Features and digitize all plannimetric features

Background and Objectives

Our client is a leading GIS Services company offering expertise for major development projects and has expertise in topography, photogrammetry, geomatics and land law. They have worked extensively on projects in the Water and Wastewater, Urban Planning, Utilities and Transportation sectors. They work closely with several organizations in France and Europe and some of their clients include Institute Geographic National of France, Ordnance Survey in U.K., etc.

Key Aspect of the Project

The key objective of this project was to compile all DTM Features and digitizing all plannimetric features with respect to 1:5000 stereo plotting scale. The project-involved development of critical information, which would be used for study of the risk of floods for the specified region.

Services Rendered and Methodology

This project required our Photogrammetry specialist to undertake compilation of DTM feature map that made available information on risk of flood occurrences for the entire specified region. It spanned an area of 19000 hectares.

The client's requirements from this project was

• Compilation of DTM features 
• Digitization of all Plannimetric features.
• 5mtr Manual Contour

Scale set up for this project: Stereo plotting scale 1:5000
Total Area of the Project: 19000 Hectares

Inputs:

• Aerial images
• Aerial triangulation results
• SOCET SET set-up files

Services Rendered:

• Compilation of DTM features 
• Compiling all DTM Features like, Roads, River, Streams, Ditches, Break-lines, Spot-heights 
• Digitization of all plannimetric features 
• Digitization of all plannimetric features like Plannimetric features like Buildings, Electrical features, Tree outline, Plantation Outline, Agriculture Limit, etc.
• Automatic Contour for 5Mtr
  
  
  
  

Deliverables:

• Microstation.dgn format

Tools Used:

• Microstation V 8
• Leica Photogrammetry Suite