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Questions tagged [arc-hydro]

A suite of tools developed by Esri to facilitate the creation, manipulation, and display of hydro features and objects within the ArcGIS environment.

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0answers
36 views

Error 000840 : Value is not a feature layer

Someone knows something about this error ExecuteError: ERROR 000840: The value is not a Feature Layer. ? I'm trying to use a File System Raster in scripts from ArcHydroTools and this error ...
0
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1answer
27 views

ArcHydroTools FillSinks Error HRESULT E_FAIL in ArcMap [closed]

I'm trying to use ArcHydroTools in ArcMap 10.2.2 and this error always appears in the finish of the process: File "<stdin>", line 1, in <module> File "C:\Program Files (x86)\ESRI\...
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1answer
40 views

ERROR 000840: The value is not a Raster Layer

I'm getting use FillSinks by ArcHydroTools but some problems are happen. I use this code: import arcpy import ArcHydroTools from arcpy import env ws = env.workspace = r"C:\Users\fractal\Desktop\...
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0answers
37 views

Calculating length downstream of edges in a network

I have a fairly complex and large river system that I would like to calculate length downstream between any two points within the river network. I have a calculation between any two points in the ...
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0answers
30 views

Using Fill Sinks of ArcHydroTools?

I'm getting use FillSinks of ArchHydroTools with Python but some problems are happen My code is: import arcpy import ArcHydroTools ArcHydroTools.FillSinks('projectraster.tif','fil.lyr', "10", "...
0
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1answer
25 views

Estimate total stream length, frequency and order in ArcMap [closed]

I am new to GIS, and I want to calculate the stream frequency and Strahler stream order in a watershed. I have already processed the DEM and there are 20 sub basins. A sample map what I want to get is ...
0
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1answer
47 views

How long should it take to generate a Hydro Network? [closed]

How long should the geoprocessing take to generate a geometric Hydro Network for a fairly large watershed, using ArcHydro? I have ~ 53,000 DrainageLine segments in the stream layer. I'm using ...
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0answers
17 views

Determining lake catchment in Arc Hydro tools?

I am trying to determine a lake's catchment with Arc Hydro tools or other tools in ArcMap. I tried basin tools in sptial analyst and catchment grid delineation tools in ArcHydro Tools but all the ...
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0answers
43 views

Rainfall Runoff Modeling Using HEC-GEO HMS

I have been using Arc Hydro and HEC-GeoHMS to analyze a watershed, and everything has been running rather well until I started trying to calculate slopes. Both Arc Hydro and HEC-GeoHMS give me the ...
2
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1answer
57 views

Arc Hydro: Assign Stream Slope Producing _Mostly_ Correct Elevation

I'm pretty new to the Arc Hydro Toolbox. I used assign stream slope in the Arc Hydro toolbox. It produced a mostly correct to and from elevation. However, if you look at the purple arrow, it shows a ...
0
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1answer
14 views

ArcHydro Point to Stream WSE DEM error

I have been trying to figure out how to make a flood delineation map, and the tool runs, but I'm getting this error "001003: Datum conflict between input and output." I thought this would be as simple ...
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0answers
115 views

Using Arc Hydro tools in ArcGIS Pro for stormwater workflows?

Has anyone had success using Arc Hydro for ArcGIS Pro for stormwater workflows? I'm currently using ArcGIS Pro version 2.3 with the ArcHydro 2.0.13 tools from 1/4/2019 I downloaded here: http://...
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0answers
54 views

What causes error 000860 when running stream definition for Arc Hydro tools?

I am using Arc Hydro tools, but whenever I reach stream definition, it fails, giving error 000860. Yet I think I have done everything right. What could be the problem? I have run DEM reconditioning, ...
1
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0answers
80 views

Arc Hydro toolset to delineate surface drainage area

I need to determine the total amount of surface area that will drain to a given point in an urban environment. It seems that the Arc Hydro toolset can delineate the watershed that will drain to a ...
1
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0answers
77 views

ArcGIS Calculate flooding area based on input amount of water

I have created a DEM based on historical maps from 1816. I'm supposed to calculate the flooded area for certain amounts of water (in m³/s). I intended to do it with ArcHydro - however, as far as I ...
1
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1answer
469 views

DEM reconditioning?

I'm using ArcGIS Desktop 10.5 Arc Hydro Toolbox & encountered a problem while trying to delineate watersheds respectively drainage lines. The red lines indicate my obtained drainage lines, which ...
0
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1answer
328 views

How to create “AGREE Stream” for DEM Reconditioning in Arc Hydro tool?

I want to deliniate streams and watershed using SRTM DEM. for this I am using Arc Hydro tool. While performing DEM Reconditioning for DEM manipulation it asks AGREE Stream as a input. How to create ...
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0answers
37 views

Comparing aerial photography with stream network (flow accumulation tool)?

I have obtained a stream network for my study area (in southern Uruguay, South America) from a DEM using the Hydrotools from ArcGIS. I want to determine a flow accumulation threshold comparing my ...
0
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1answer
21 views

Why a range in area for catchments even if stream definition is set at a single size?

Using ArcHydro, I set stream definition at 5000, 20x20 cells (approx. 50 acres). I placed points at origins of each subsequent stream with batch point generation tool. Then used batch watershed ...
0
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0answers
34 views

ArcHydro: Subwatershed Does Not Contain Next Down ID

I am delineating watersheds for a hydrological model. I am using the "subwatershed" feature as this is what I want - the catchment area from the next upstream "batch point" to the current "batch Point"...
1
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0answers
80 views

How to identify the upstream sub basins contributing towards different drainage outlet points?

I have done the watershed delineation of a basin and have created several sub-basins using ARC-hydro tool. Now I need to identify which are the correponding upstream sub-basins contributing towards ...
0
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1answer
125 views

Building walls to correct channelized flow in ArcHydro

My current project entails burning in a known river network into a high resolution (10x10m) DEM. In doing so, I'm attempting to build walls to correct for channelized flow in the DEM, in order to ...
1
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1answer
56 views

ArcGIS ModelBuilder looping wrong tools?

I've created a toolchain in ArcGIS ModelBuilder (see in the picture) But after Creating the "Flow Direction" and the "Iterate field Values" it starts again with the "DEM reconditioning", it's an ...
1
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1answer
230 views

Adjoint catchments missing in Arc Hydro?

I am using ArcGIS Desktop 10.4. I have to calculate the upstream river catchments of all my small river catchments. As you can see in the picture below, there are catchments missing in a weird ...
2
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0answers
117 views

Optimized smoothing of stream lines generated from Arc Hydro? [closed]

Has anyone found an effective ArcGIS 10.3.1 workflow for smoothing streamlines generated from ArcHydro...or hydrology in general? (Fill -> Flow Dir. -> Flow Acc. -> Stream Def. -> Stream Seg.-> ...
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0answers
86 views

Improve Catchment polygon processing result accuracy?

I use the ArcHydro Toolbox and ArcGIS 10.4 I ran through the regular steps of Filling Sinks of a DEM, Flow Direction, Flow Accumulation, Stream Definition, Stream segmentation, catchment grid ...
0
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1answer
132 views

Creating slope grid using Arc Hydro tools says dataset does not have spatial reference?

I am not able to create the slope grid using hydro tools. I am getting a error message saying that The dataset does not have spatial reference. Please specify a valid spatial reference How do I ...
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0answers
185 views

Error running ArcHydro tools - can't set locations or arguments correctly?

I am working on trying to do some batch watershed processing. I have watersheds created using ArcHydro, and was trying to run the Longest Flow Path tool in a batch method, on different feature ...
4
votes
1answer
119 views

Limiting flow direction to D4 instead of using D8 in ArcMap?

Is there a way that I can limit flow direction to D4 instead of having it use D8? Preferably looking for a way to do it within ArcMap.
2
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1answer
255 views

Which algorithm is used for fill sinks in arc hydro tools?

How I can get information regarding the % of voids filled using fill sinks in DEM and the algorithm used to fill the voids using arc hydro tools?
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0answers
86 views

ArcHydro flood depth artifacts

I'm trying to delineate floodplains in a catchment using "Stream WSE from point WSE Measurements" as in (https://blogs.esri.com/esri/arcgis/2014/03/17/floodplain-delineation-using-only-arc-hydro-...
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1answer
130 views

Dissolve Lines without Dissolving Convergent Lines?

I've been playing with arcHydro and related processes a bit and have run into an obstacle. I have been creating stream networks from the flow accumulation, direction, and stream order functions. When ...
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0answers
37 views

Extract raster data by feature attributes/elements

I have a DEM raster, and a shapefile consisting of ~20 lines of steepest descent, created from the "flow Path Tracing" tool in Arc Hydro. Though the lines are all in the same shapefile, I wish to ...
3
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0answers
297 views

ArcHydro catchment area of specific stream segment

I am given the task to create the catchment areas of specific streams/lakes. To sum it all up, I am looking to find the catchment areas for lake 1, stream, lake 2 and downstream of lake 2 all ...
1
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1answer
106 views

Delimit Hydrographic Basin, based on a single river

I find myself doing a hydrological study, where I have to delimit the river basin based on a single river (polyline). I have the DEM where the river of my interest is, and I have the river as a ...
2
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0answers
124 views

Arc Hydro Stream WSE to point WSE measurement tool

I wish to use stream wse to point measurement tool for finding out the flood inundation extent. Can anyone provide an example of the input time series table to be used in the tool?
2
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1answer
434 views

Locating flooded area by creating buffer with elevation around points using ArcGIS Desktop?

I have a shapefile with points, that each have an elevation in their attribute tabel, based on how high the water level is, at a given return period. I need to create a buffer around these points at ...
2
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0answers
753 views

DEM Reconditioning / Stream Burning with ArcHydro [closed]

I have a specific question concerning ArcHydro. I'm using ArcGIS 10.4.1. My goal is to burn water/streams (a shapefile) 2 meters into a DEM that I have acquired from USGS (see image). The cell size ...
0
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1answer
142 views

Flow Accumulation Stream Buffer

I would like to create a dynamic buffer based on contributing drainage area for a stream. I have done some research and I think the best way would be to use the flow accumulation tool but I'm not sure ...
0
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1answer
52 views

Stream network using multiple cell thresh holds inArcGIS

I'm trying to create a stream network with drainagelines formed at varying thresh holds throughout a drainage basin. Is there any way of doing with Arc and still creating a stream network that is ...
4
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0answers
160 views

Watershed delineation with meandering river?

I'm using ArcGIS (Hydrology toolbox) for watershed delineation for a number of pour points, and I'm running into problems with very meandering rivers on extremely flat alluvial land (Amazon basin). ...
2
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0answers
86 views

Even though I added the Arc Hydro Tools to my toolboxes I cannot open and access the Arc Hydro Tools

Even though I added the Arc Hydro Tools to my toolboxes I cannot open and access the Arc Hydro Tools. [
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0answers
186 views

Reconditioning and Drainage Line ArcHydro

I cannot get ArcHydro to run Reconditioning - says object reference not set to an instance of an object. So, not finding what that refers to, I skipped that and used the sequence of Terrain ...
1
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3answers
698 views

How to Call ArcHydro Tools in Stand Alone Python Script

I am currently using ArcGIS ArcHydro tools to perform 'Catchment Polygon Processing'. However, it is proving time consuming to perform this for multiple rasters. How might a write a python script to ...
2
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0answers
95 views

Watershed tool producing same output as basin tool for all pour points [closed]

I am using the Hydrology Tools in the Spatial Analyst Toolbox (ArcGIS 10.3) I am trying to delineate watersheds in a region in order to do spatial interpolation by top-kriging at some ungaged sites. ...
6
votes
1answer
682 views

Determining Thalweg line of river without bathymetry?

I have the boundaries and centerline of a river. The Thalweg line defines the deepest elevation of a watercourse (see Image taken from Google). I do not have accurate enough bathymetry or Digital ...
4
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1answer
1k views

How is “Burn Stream Slope” in ArcHydro working?

I have a DEM with only small relief and many ditches. Because of the small relief, I can't calculate flowdirections for some parts of my DEM. I know that in reality water is flowing from west to east (...
5
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1answer
2k views

Calculating Flooded area / Inundation in ArcGIS for Desktop?

I was tasked to create a layer with the flooded areas if the sea / river level was to go up by X feet. There is no requirement to take Flow and Pour Points into account, just a simple raise in water ...
3
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2answers
152 views

How to plan preservation of wetland using a DEM and ArcMap?

I'm trying to plan a wetland preservation. This is the DEM I have: My aim is to hold as much rainwater as possible in my area of interest (red poly) by building (as few as possible) new and raising ...
4
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0answers
326 views

Different watersheds for same area because of “burned streams”

Im trying to analyse where water is flowing which rains down to my project area. This is the DEM I have (my project area is bordered blue, the red marks are my pour points): I learned from another ...