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Dear all I have now installed sp4 and it works! Thanks to all of you for your valuable help! I still have some problems with the lakes. Due to errors in the DEM I get a lot of smalls sinks here. When filling up these sinks I get larger sinks (like the lakes) and their watersheds are very large. However, I just want to get small natural sinks where the water can accululate and where the stormwater network needs to be improved. Do you use to remove lake areas before the analysis or give the cells in the lake the same elevation? /Linda
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01-10-2013
02:59 AM
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Hi everyone! Has this problem been solved? I am trying to identify natuaral sinks in the terrain. Using ArcGIS 9.3 I am able to fill some of the sinks, by specifying a Z limit. It doesn't work in ArcGIS 10.0. Thanks in advance! /Linda
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01-09-2013
01:48 AM
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Hi When I generate watersheds for an area using the tools in Spatial analyst I get nice watershed polygons, but to some pour points I get very small polygons (see attached polygon). They disturb the result. What is the reason to this? Is there a way to avoid this? I have used the Fill tool.
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12-20-2012
02:59 AM
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Hi all I would like to generate watersheds for an area using the tools in spatial analyst. The area is situated in a city where there is a stormwater network that will influence on the catchment areas. Would it be correct to use the raster calculator to combine the DEM with the storm water pipes? Or should you solved this in another way?
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12-19-2012
06:19 AM
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I think that it's not a symbology problem. When I generated the stream features I only got the polylines that was visable in the raster. Thank you for the recommendation about using GeoHMS! I works, but I get over 100 grid codes and it is difficult to present that result. Perhaps it is something wrong with the DEM.
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12-19-2012
06:06 AM
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Dear all I am trying to get a stream order network using spatial analyst. I have used the Stream order tool before and the result was a network with grid codes from 1 to 5. This time, with another DEM, I am only getting streams with grid code 1. I am using a flow direction raster and a flow accumulation raster (after Con tool, value > 1000) as inputs. In the flow accumulation con raster I can see all the streams, but after using the Stream Order tool some of these streams disappear. Please find the pictures attached. Do someone understand why I got this result? Linda
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12-17-2012
04:36 AM
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