Dataset inFlag1_prj_layer_xxxxxx does not exist or is not supported I am running the Connect Control Structure Junctions (archydropro) tool and keep getting the same error messages:  First, Error 999999 telling me "Something unexpected caused the tool to fail..." and that I should contact technical support (I do not have access to technical support?) Second, Error 0...

#Geodatabase #archydro

Error in ArcHydro WIM tools 'metersPerUnit does not exist' I am working through the Wetland Identification toolset in ArcHydro and am getting this error on a few tools (screenshot below). I am using .tif's only and have tried a few different versions of the input. My project area is pretty small. I would appreciate any insight into how to resolve this.   Th...

#WaterResources #ArcHydro

2025 Pre-UC Water Resources The 2025 Pre-UC Water Resources | Hydro Meeting was a great success! Thank you to all of the presenters.  I've uploaded PDF versions of the presentations. Please note that only presentators that have given permission to share their content are represented.  See everyone next year!

#WaterResources #ArcHydro

Error: Define Overland Preferential Node Link Schema I'm working through an ArcHydro workflow and just ran the Connect Control Structure Junctions tool. The workflow I'm using was developed by a coworker for ArcMap and we are adapting it as we go. When I run the DOPNLS tool, I get a few errors that I don't know how to address (pictured). I've attached...

#archydro

DEM Reconditioning does not change DEM I'm using ArcGIS Pro version 3.5.2, standard license with 3D and spatial analyst extensions. I am using DEM Reconditioning tool to burn my stream into the DEM. The tool finished successfully but the resulting AGREEDEM is essentially the same as the input DEM (the difference is in the 5th decimal pla...

#WaterResources #ArcHydro

DEM Processing for Erosion Error Hello all, I'm trying to run through ArcHydro's H&H Erosion tools but I'm stuck on the second part "DEM Processing for Erosion" any time I try to run it, I get the error "['line 103', 'c:\\program files\\arcgis\\pro\\Resources\\ArcToolbox\\Scripts\\archydro\\demprocessingforerosion.py', 'OSError: ""...

#WaterResources #ArcHydro

Error Creating HAND based on Distance with Catchment Raster I'm following the tutorial "Creating Flood Depth Rasters for Flood Impact Analysis" from June 2023 with ArcHydro, and twice I have made it all the way through the tutorial and get stuck on the Creating HAND based on Distance with Catchment Raster step. Here is the text of the error message that I am...

#archydro #hydrology

HAND Based Flood Depth and Extent not running in entire watershed I have been running the HAND-based Flood Depth and Extent From Table tool for two adjoining watersheds. However, I consistently receive output—both flood depth raster and flood extent polygon—for only one watershed, and even that appears in fragmented sections. Despite rerunning the tool multiple ti...

#WaterResources #ArcHydro

Need help with Create Vegetative Cover Factor Raster Hello, I'm running into a reoccurring issue with the Create Vegetative Cover Raster tool. Every time I have tried to run it, I receive a 010414 error message stating that a raster could not be created from a geodataset. I noticed that recently, some videos demonstrating the Arc Hydro Erosion Toolset...

#ArcHydro

Estimate the 5-, 10-, 15-, 25-, and 100-year flows using the Unit Hydrograph method in Pro or ArcMap? Hi, Is there a way to estimate the 5-, 10-, 15-, 25-, and 100-year flows using the Unit Hydrograph method in Pro or ArcMap?  Or do I need to use HEC-HMS software (or HEC GeoHMS and HEC GeoRAS for ArcMap)? I'm currently using ModelBuilder in ArcGIS Pro 3.4 to: Delineate watersheds based on culvert p...

#WaterResources #ArcHydro

Arc Hydro Characterize DEM - Flat Area Raster step fails Hello everyone, I'm stuck on the Characterize DEM tool in the Arc Hydro Erosion Toolset. Every time I have attempted to run the tool, it produces a landform raster but then fails on the next step: identifying flat areas and generating a flat area raster. I found a recent post that seems to be addres...

#ArcHydro

Generate Node Link Schema Not Working I'm working my way through the Arc Hydro - Support for Hydrologic Modeling.pdf for the purposes of preparing a hydrologic model for input into HMS. For the Generate Node Link Schema script I get several warnings like what I have pasted below. I've ensured I have no unsaved edits in Pro. The Schema N...

#WaterResources #ArcHydro

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Get to Know #Esri’s Water Team www.esri.com/en-us/industries/blog/ar... #hydrology #hydrogeology #ArcHydro