Error

[Alasdair Grant]

Dear all,

I wonder if someone can explain why I am getting the following errors. 

The DEM is from the UK Environment Agency 10m Lidar Data Set. 

The catchment is from the OS Open Rivers data set. 

The hydronodes file is a modified version of the Hyronodes file from the OS Open Rivers dataset. 

Regards,

Alasdair 

[Chris George]

The reason for the error is what it says. There is point with ID 122 in
the hydronodes shapefile that does not appear as a DSNODEID value in the
streams shapefile. There is no stream draining to or through this point.

Since the delineation form says that of the points in the hydronodes
shapefile 94 were snapped, i.e. could be placed on a stream within 1000
metres, but 235 failed, there are 235 such errors.

You need to restrict your inlets/outlets file to points in your watershed.

Chris

On 7/15/2024 4:04 PM, Alasdair Grant wrote:
> Dear all, I wonder if someone can explain why I am getting the following
> errors.   The DEM is from the UK Environment Agency 10m Lidar Data Set.
>    The catchment is from the OS Open Rivers data set.   The hydronodes
> file is a modified version of

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[Chris George]

So you need to investigate why they are not snapped to the streams.
Does increasing the threshold help?

Chris

On 7/15/2024 5:24 PM, Alasdair Grant wrote:
> Chris, The points are all within the watershed. Regards, Alasdair On
> Mon, 15 Jul 2024, 16: 51 Chris George, <cgeorge@ tamu. edu> wrote: The

> reason for the error is what it says. There is point with ID 122 in the
> hydronodes shapefile that

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> Chris,
>
> The points are all within the watershed.
>
> Regards,
> Alasdair

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[Alasdair Grant]

Chris,

The points are all within the watershed. 

Regards,

Alasdair

[alasdai...@gmail.com]

Chris,

It has helped to some extent.

I will need to investigate as to why this is the case.

Regards,
Alasdair