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Query about sinks in D8 flow direction model

Question asked by sassy19a on Feb 10, 2015
Latest reply on Feb 12, 2015 by Dan_Patterson

Hi, I have a few questions about using the hydrology toolset in ArcGIS.

 

  1. After creating the Flow Direction model, I identified the sinks and found that there were some reservoirs which were not included as sinks. I assume that this is because the DEM did not capture the elevation profile for these areas properly. I have a polygon layer of the reservoirs, but unfortunately with no depth profile. Will this help?
  2. When I eye-balled through the sinks, I realised that a lot of them has the value of "No Data". How do I fill up these sinks for such instances to separate them from the true positives?

 

Thank you.

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