Error Creating watershed

[楊毓婷]

Sorry, my English is not very good, so I might not express myself clearly.  

  The problem I’m facing is that when I create it, clicking on the reservoir always causes an error, and the channels cannot connect properly.   But when I only click on the outlet, it works successfully.I hope someone with more experience can help and give me some advice.Thanks.

[Chris George]

Looks like you are putting the outlet and the reservoir in the same DEM
pixel. Points must be in separate pixels to both be recognised. Move
your reservoir upstream a little.

Chris

On 7/23/2025 8:06 AM, 楊毓婷 wrote:
> Sorry, my English is not very good, so I might not express myself
> clearly. The problem I’m facing is that when I create it, clicking on
> the reservoir always causes an error, and the channels cannot connect
> properly. But when I only click on

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> QQQQ.JPG Sorry, my English is not very good, so I might not express
> myself clearly.
>   The problem I’m facing is that when I create it, clicking on the
> reservoir always causes an error, and the channels cannot connect
> properly. But when I only click on the outlet, it works

> successfully.QQQQ2.jpgI hope someone with more experience can help and
> give me some advice.Thanks.
>
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[楊毓婷]

  Actually, I originally placed the reservoir a bit further upstream, but the error still appeared. Later, while trying to solve the problem, I found that it might be because I didn’t click it properly. I got a suggestion to try using ‘snap’, and after selecting snap, the reservoir and the outlet merged together. Thank you for replying to me!  

chris.g...@gmail.com 在 2025年7月24日 星期四凌晨12:12:29 [UTC+8] 的信中寫道：