Potential in flow accumulation?

You may remember reading the post Drones and Satamap where I discussed the difference between the two technologies. In this post we are going to take that paddock and examine a bit closer one factor that may have contributed to the water logging event.

With elevation data derived from there Shuttle Radar Topography Mission (SRTM) Digital Elevation Models, Geoscience Australia have a national dataset that with a bit of processing on our end can produce flow accumulation maps. When applied to a system like Satamap we are able to start understand the macro influence on a paddock, particularly the catchment area for water that runs through the paddock.

In this example you can see that water accumulated from at least two fallow paddocks which could have contributed to the water logging event.

Grey to black areas show where water accumulates. flow accumulation data is adapted from Commonwealth of Australia (Geoscience Australia) and used under Creative Commons Attribution 4.0 International Licence.

Grey to black areas show where water accumulates. Flow accumulation data is adapted from SRTM derived DEM maps available from Commonwealth of Australia (Geoscience Australia) and used under Creative Commons Attribution 4.0 International Licence.

The elevation data from SRTM is fairly low resolution but used in this context can potentially create some valuable information. Flow accumulation is not yet available in Satamap, but if this is a feature you would like to see Australia wide, please let me know on Twitter (@SatamapAU) or through the contact from at satamap.com.au.

Satamap founder and grain farmer from Moree, NSW, Australia.

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