Olá, eu tenho dois conjuntos de dados com os quais gostaria de trabalhar no Arc Hydro. É importante queimar os bueiros no DEM, caso contrário, as estradas agirão como barragens. * Um Modelo Digital de Elevação (DEM) gerado a partir de LiDAR de alta resolução * Camada Feature Class Polyline contendo bueiros pesquisados Eu estava analisando o uso da ferramenta Build Walls no Arc Hydro para queimar os bueiros no DEM usando o Input Breach Line Raster. No entanto, isso requer que os bueiros estejam em formato raster e atualmente eles estão em uma camada feature class. Problemas semelhantes ao usar a ferramenta DEM Reconditioning, que também requer entrada em formato raster. Existe alguma ferramenta para converter meus bueiros Feature Class Polyline para formato raster ou existe alguma ferramenta\/fluxo de trabalho no Arc Hydro onde eu possa inserir os bueiros como Feature Class Polyline para queimá-los no DEM e criar um Hydro Conditioned DEM (acho que isso é frequentemente referido como um AGREE DEM)?

To summarize the solution my workflow is as follows: * Trace culverts as polylines from surveyed points. * Zonal Statistics tool statistics type minimum value (input raster or feature zone data is culvert polyline layer; input value raster is the DEM). * Mosaic to New Raster tool using the output from Zonal Statistics Tool as the first input raster; the DEM as the second input raster; 32-bit float which matches my DEM; Mosaic Operator first. The output is a DEM with the culverts burnt in using the minimum LiDAR values along that line.

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Queima de Bueiros no DEM do Arc Hydro

KevinSchmidt1

Olá, eu tenho dois conjuntos de dados com os quais gostaria de trabalhar no Arc Hydro. É importante queimar os bueiros no DEM, caso contrário, as estradas agirão como barragens.<\/P>

Um Modelo Digital de Elevação (DEM) gerado a partir de LiDAR de alta resolução<\/LI>
Camada Feature Class Polyline contendo bueiros pesquisados<\/LI><\/UL>
Eu estava analisando o uso da ferramenta Build Walls no Arc Hydro para queimar os bueiros no DEM usando o Input Breach Line Raster. No entanto, isso requer que os bueiros estejam em formato raster e atualmente eles estão em uma camada feature class. Problemas semelhantes ao usar a ferramenta DEM Reconditioning, que também requer entrada em formato raster.<\/P>
Existe alguma ferramenta para converter meus bueiros Feature Class Polyline para formato raster ou existe alguma ferramenta\/fluxo de trabalho no Arc Hydro onde eu possa inserir os bueiros como Feature Class Polyline para queimá-los no DEM e criar um Hydro Conditioned DEM (acho que isso é frequentemente referido como um AGREE DEM)?<\/P>

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Accepted answers

KevinSchmidt1

To summarize the solution my workflow is as follows:

Trace culverts as polylines from surveyed points.
Zonal Statistics tool statistics type minimum value (input raster or feature zone data is culvert polyline layer; input value raster is the DEM).
Mosaic to New Raster tool using the output from Zonal Statistics Tool as the first input raster; the DEM as the second input raster; 32-bit float which matches my DEM; Mosaic Operator first.

The output is a DEM with the culverts burnt in using the minimum LiDAR values along that line.

All comments

JayantaPoddar

Hope the polyline has an elevation field. You can execute Polyline to Raster using the "Elevation Field" as the Value Field.

KevinSchmidt1

They do not currently, but that is something I can add thanks for the help!

Do you know of a tool that can read the minimum elevation along the polyline from the DEM and apply that value to a value field on the culvert Polyline Feature Class?

JayantaPoddar

*In case it's a single value for the whole Feature Class,

You could use Extract by Mask, the result would be a raster (along the lines). You could use the lowest value of the raster to Calculate the field.

JayantaPoddar

In case you want each record of the culvert feature class to take the minimum value from DEM individually, you could use Zonal Statistics as Table .

You can then Join the field with the Culvert Feature Class based on ObjectID or any other suitable ID field.

KevinSchmidt1

See the image attached, that extract by mask tool worked great. Is there now a way to calculate the minimum value along that raster and apply it to the elevation field for each of the culverts on the layer? I can do it manually it is just time-consuming. There are 175 culverts on this layer, so anyway I can lean up the process would be useful.

Culvert_OverlaybyMask.JPG

MB_Hydrology

I have used Dendritic Terrain Processing with Imposed Drainage line and wall; you can look at it in the model builder to find out the exact gp tool they used for hydro conditioning.

I also use acpf : https://acpf4watersheds.org/toolbox/

With my very limited experience with archydro, I found acpf much faster. For your purpose, you can use the manual cutter and dam builder tool in acpf; it will take feature class as input

KevinSchmidt1

To summarize the solution my workflow is as follows:

Trace culverts as polylines from surveyed points.
Zonal Statistics tool statistics type minimum value (input raster or feature zone data is culvert polyline layer; input value raster is the DEM).
Mosaic to New Raster tool using the output from Zonal Statistics Tool as the first input raster; the DEM as the second input raster; 32-bit float which matches my DEM; Mosaic Operator first.

The output is a DEM with the culverts burnt in using the minimum LiDAR values along that line.

MattNash1

To burn the culverts into a lidar DEM, I run the DEM Reconditioning tool to create an AgreeDEM, using the culvert lines (after converting them to raster) as the "input stream raster" input. I sometimes have to tweak the culvert lines a bit to make sure they completely breach the roads, then convert them to raster.

_Drew_

Hi Kevin,

Would you be willing to show how you did this on a screenshare?

Thank you for considering -

Andrew Lloyd - alloyd@mercercounty.org

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