Created Streams not covering the full watershed

[Ashwin Ghimire]

Hi,

The streams I created using a NIH Burn-In shapefile and a working DEM doesn't cover the full watershed immediately after I click on create watershed and my create watershed.

Before clicking on create watershed, it has a working full coverage.

Why would this be? Please let me know, thank you

[Chris George]

Burning in does not create any streams: it just lowers the DEM along the
stream lines.

Try reducing the stream and channel thresholds so they start further
upstream.

Chris

On 11/11/2025 10:28 PM, Ashwin Ghimire wrote:
> Hi, The streams I created using a NIH Burn-In shapefile and a working
> DEM doesn't cover the full watershed immediately after I click on create
> watershed and my create watershed. Before clicking on create watershed,
> it has a working full coverage. 

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[Ashwin Ghimire]

They do start further upstream. But, when clicked on create watershed, the said stream layers that pre existed, even they lose the upstream features (and subsequently so does the sub-basin)

[Ashwin Ghimire]

The streams start further in that stage and the features exist in every place. But, once i create my watershed, the already created stream layers lose their features upstream and make the sub basin smaller subsequently. 

On Wednesday, November 12, 2025 at 10:47:26 AM UTC-5 chris.g...@gmail.com wrote:

[Chris George]

As I said, burning in does not create any streams: they are never in
your model. Reduce the thresholds further, perhaps.

Chris

On 11/12/2025 3:51 PM, Ashwin Ghimire wrote:
> They do start further upstream. But, when clicked on create watershed,
> the said stream layers that pre existed, even they lose the upstream
> features (and subsequently so does the sub-basin) On Wednesday, November
> 12, 2025 at 10: 47: 26 AM UTC-5

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