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clangridge1
Here is the some background. I am trying to create streams from DEM. The DEM data is LiDAR product, in 1 meter resolution. I exported a small area of the province. The number of raster cells = 1200million.  I did the hydroconditioning of the DEM, Fill and Flow Direction. All finished successfully within decent time. But the Flow Accumulation took… (Show more)
in Arc Hydro
fernandezz.franciscoo
Hello everyone,   I am currently trying to delineate an urban watershed using Arc Hydro tools. I have successfully completed all the Terrain Processing steps up to Catchment Grid Delineation. When I try to run Catchment Polygon Processing I keep getting this error message:   Error HRESULT E_FAIL has been returned from a call to a COM component  … (Show more)
in Arc Hydro
bem08c
Hi all,    I'm trying to use to Arc Hydro Groundwater Toolbar and running into an issue. When I install the tools and open up ArcMap, if i navigate to customize->toolbars the Arc Hydro Groundwater toolbar will be there. However, when i click it no toolbar pops up and when I go back to click it again it has now disappeared from the toolbar menu. I… (Show more)
in Arc Hydro
rajahprakash
hi everyone! i am about to  prepare the flood hazard maps based on river & flash floods (area about 30 Sq Km) ,  to do so, i am preparing the hydro models based on number of platform (Arc hydro, Hec-Ras, Hec-Hms), & i am seeking well arranged procedures (models) to get reliable flood hazard maps, & recently read about " Stream  WSE From Point… (Show more)
in Arc Hydro
bem08c
Hi All,    I'm trying to create a Stream Order layer from named NHD lines and I'm running into a few problems. First off, I have done this before and it is possible. I'm running through the steps: Assign Hydro ID, Generate to/from nodes,Find next Downstream line, Assign River order.   My data set has around 66,000 lines segments and each of… (Show more)
in Arc Hydro
npai
I am doing some large scale attribute accumulation requiring 8-12 hours and have the attributes in multiple fields. Is there a way to setup the attribute accumulation for multiple fields at the same time?  Currently, I am doing these by making copies of the feature class and running attribute accumulation separately. Looking for a more efficient… (Show more)
in Arc Hydro
sjskhalsa
I'm attempting to create subbasins for the deranged Aral Sea basin, which contains the major rivers Amu Darya and Syr Darya. I'm using a custom SRTM-GDEM blended DEM (90m postings in Albers Equal Area). When I prescreen sinks, if I set a low threshold for drainage area I get 1 million or more sink polygons. If I set a high threshold it misses the… (Show more)
in Arc Hydro
Playa
Dear ESRI Community   I'd like to find out if anyone has made use of TauDEM for Hydrological Modeling? I'm keen to find out if its possible to determine the following using TauDEM:   Longest Flow Path (Subwatershed or Watershed) Slope 10/85 Length to Centroid (Centroidal Longest Flowpath)     Regards
in Arc Hydro
sjskhalsa
I am using for the first time the deranged basin workflow in ArcHydro in ArcGIS 10.3. All goes well with the DEM preconditioning, I successfully defined sink polygons with larger ones set to IsSink =1. But when I execute Fill Sinks, it runs for a while but ultimately end with a (typically) undecipherable error message.  Tried closing and reopening… (Show more)
in Arc Hydro
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