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I usually copy and paste the model in the toolbox, rename, edit and save.
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04-23-2012
04:12 PM
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I feel your pain. However, for my latest project I used the GeoHMS toolbar menus. They seem to be the same as the ArcHydro menus, but simplified... and THEY WORKED (this time). The Batch Watershed tool worked. It created "subwatersheds" which is what I wanted.
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04-23-2012
04:08 PM
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What I would do is use ArcHydro. Run the DEM reconditioning to "burn in" the streams. Result > agreedem Run the fill sinks function. Result > fil Run the flow direction function. Result > fdr Now you can use the flow path tracing tool with the fdr to see where the flow goes. If it gives you results you expect, then move to the next step. If not, you may you may need to check your agreestream polyline layer. Then do it again. This time create an "innerwalls" polyline layer and "block" the creek by putting an innerwalls line accross the agreestream polyline where you want to block flow. Then follow these steps: Run the DEM reconditioning to "burn in" the streams. Result > agreedemblk Run the Build Walls tool using the agreedem and the innerwalls layer. DONOT use a breech line (this would typically be the agreestreams layer). Results > walleddem Run the fill sinks function. Result > filblk Run the flow direction function. Result > fdrblk Now you will have a new fdrblk dem the will be filled in behind the "blockage" and you can see the flow direction your DEM gives you by using the flow path tracing tool
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04-23-2012
04:03 PM
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This is a duplicate post from the Hydro Forum: http://forums.arcgis.com/threads/55351-CPU-speed-and-Memory-requirements-for-ArcHydro-and-Geoprocessing I'm wondering what others are using to operate ArcHydro (performs geoprocessing for hydrology purposes). I'm getting more and more suspicious that most of the current problems I'm having stem from memory issues. I've got: Windows 7, ArcGIS 10, the latest version of ArcHydro. 64-bit 4GB RAM 300 GHz Duo Core Intel processor I'm currently working with a 10' grid DEM 10.2 square miles mask extracted rawdem of 24.41 MB. Seems like plenty, but is this enough? This is the same configuration they have given everyone in the Department. I'd need "special dispensation" to get more.
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04-17-2012
06:41 AM
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I'm wondering what others are using to operate ArcHydro. I'm getting more and more suspicious that most of the current problems I'm having stem from memory issues. I've got: Windows 7, ArcGIS 10, the latest version of ArcHydro. 64-bit 4GB RAM 300 GHz Duo Core Intel processor I'm currently working with a 10' grid DEM 10.2 square miles mask extracted rawdem of 24.41 MB. Seems like plenty, but is this enough? This is the same configuration they have given everyone in the Department. I'd need "special dispensation" to get more.
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04-16-2012
12:47 PM
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The problem you are having may be because of other issues, not just that function. Check out the tips here. http://forums.arcgis.com/threads/48100-ArcHydro-Problem-Solvers
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04-16-2012
08:45 AM
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Hi All: I ... ran the flow direction,IDed and filled sinks, corrected the flow direction, and did flow accumulation (for all 10 maps). The order you use to tools in is EXTREMELY important. What you describe in the quote is not right. Follow the order used below if projecting the DEM's does not fix your problem.
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04-16-2012
08:28 AM
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This was solved by resetting the processing extents. Got to Geoprocessing> Environments >Processing Extent to be equal to a layer that spans the area I was working on.
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04-16-2012
08:18 AM
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Check out the tips here. http://forums.arcgis.com/threads/48100-ArcHydro-Problem-Solvers
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04-06-2012
07:31 AM
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Try these tips: http://forums.arcgis.com/threads/48100-ArcHydro-Problem-Solvers
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04-02-2012
12:48 PM
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Fernando, I think you are not following the proper order of the steps. Doing it they way you are explaining does not make sense to me. It helps me to think of the DEM as a physical model I need to manipulate a little before the water will shed off it "correctly". Think of the grids in he DEM as tiles with different elevations. The DEM usually includes grids that are not a the flowline of the creek (bridges/culverst) or poorly defined watersheds such as areas in the flat lands. So, I have to lower the grid in some places and raise it in others in order to make the water flow where is should. Then there are all the minor imperfections in the DEM of small local sinks that need to be filled so the water will flow in the right direction. Once I'm done filling the sinks, I want to have a "hydrologically correct" DEM. Once I have a good filled DEM, the rest should be correct also. With the filled DEM (fil), the flow direction will be "correct" and then the flow accumulation will also be correct. If I find later that an important stream is in the wrong place or an important watershed boundary is incorrect, then I have to go back and correct the fil DEM. If you have Arc Hydro installed, the order of steps in the Terrain Processing in generally the same order as the functions are listed in the Terrain processing menus. You probably don't need to use all of them. My steps using Arc Hydro are as follows: (You can follow these in general with in the Spatial Analyst Tool>Hydrology, but there are not parallel tools there to all the Arc Hydro tools.) 1) Terrain Processing>DEM Manipulation>DEM Reconditioning. Use a polyline layer for the streams to "burn" in the streams where they should be. This lowers the DEM in the vicinity of the stream features. Many times the DEM will not provide enough definition for the subsequent processes to define streams. It can be helpful to put a short line just a bridges or culverts to "breach" them and avoid fill behind them and flow directions around them. You may need to put in polylines for the streams and major drainage systems in some places. 2) Terrain Processing>DEM Manipulation>Build Walls. Only do this if you need to define a watershed "ridge" in a flat area of the DEM. 3) Terrain Processing>DEM Manipulation>Fill Sinks 4) Terrain Processing>Flow Direction 5) Terrain Processing>Flow Accumulation 6) Terrain Processing>Stream Definition 7) Terrain Processing>Stream Segmentation 😎 Terrain Processing>Catchment Grid Delineation 9) Terrain Processing>Catchment Polygon Processing 10) Terrain Processing>Drainage Line Processing 11) Terrain Processing>Adjoint Catchment Processing 12) Terrain Processing>Drainage Point Processing The above steps assume a simple dendritic system. If you compare the steps to the Arc Hydro menus you will see that there are a lot of functions that I don't typically use. I recently posted here about Terrain Processing (http://forums.arcgis.com/threads/52110-Terrain-Processing-Steps.?p=178459#post178459). This may also be of help.
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03-20-2012
07:18 AM
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I always use guides to snap the frames and legends. Then I'm careful what I grab in layout view. If I accidently move something off of the guide. I use cntl-Z to undo the move. It would nice to lock and not just snap things in layout view.
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03-19-2012
08:25 AM
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When this happens to me it is usually because I'm using the wrong layer in a process. Using fdr instead of fac will do this kind of thing. Confirm that you ran fill sinks properly and that the right layers are used in subsequent processes.
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03-19-2012
08:07 AM
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544
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Claire, I rarely used the toolbox for fill sinks. I just tried and I also got an error. When I run it form the toolbar, it works fine. Will it work from the toolbar for you? I ran it from tool box and it worked on this second try. Maybe there is a setting that gets set using the toolbar that the toolbox doesn't set. (?) The advice is good. You don't have to specify the fill depth. Just fill all sinks. .. or nothing at all happens, and no results are posted, and no new layer is created. ... If it seems to run successfully, refresh the folder in the Catalog to see if it is there. Sometimes this has happened to me especially when creating str and strlnk. I see "Fill sinks", "sink evaluation", "sink prescreening", and "sink selection". Which of these do you think it's referring to? Just use "Fill sinks" If you are just trying to see what streams they will produce without reconditioning, you could do it without merging the rasters (you'll have to analyze them one at a time.) If water would flow from one to the other, eventually you would want merge them.
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03-19-2012
08:04 AM
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732
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Try resetting the Processing Extents. Menu: Geoprocessing>Environment Settings>Processing Extents use the rawdem layer or larger extent.
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03-19-2012
06:57 AM
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