# The NDR model output is wrong **URL:** \ **Category:** Software Support\ **Tags:** ndr\ **Created:** [August 11, 2023, 10:30am UTC](https://community.naturalcapitalalliance.org/t/the-ndr-model-output-is-wrong/3999 "2023-08-11T10:30:07Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![mia](https://avatars.discourse-cdn.com/v4/letter/m/da6949/32.png) [@mia](https://community.naturalcapitalalliance.org/u/mia)\ **Post date:** [August 11, 2023, 10:30am UTC](https://community.naturalcapitalalliance.org/t/the-ndr-model-output-is-wrong/3999/1 "2023-08-11T10:30:07Z")
Hello，everyone.Why does the NDR model output in the investment model\_ Surface\_ Incomplete display of export results？ ![image](https://canada1.discourse-cdn.com/flex031/uploads/naturalcapitalproject/original/2X/5/5989b14db71638ced6d208a4b1fadd57ab17a442.jpeg) ---
**Author:** ![swolny](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.naturalcapitalalliance.org/swolny/32/181_2.png) [@swolny](https://community.naturalcapitalalliance.org/u/swolny)\ **Post date:** [August 11, 2023, 2:59pm UTC](https://community.naturalcapitalalliance.org/t/the-ndr-model-output-is-wrong/3999/2 "2023-08-11T14:59:29Z")
Hi @mia - What seems incomplete about it to you? If the white areas do not have data, and that’s what you’re wondering about, check to see if they correspond with the _stream.tif_ model output. Our routed water models generally don’t provide output in streams, since no in-stream processing is done, so the models move water downslope only until they hit a stream, then stop calculating. ~ Stacie ---
**Author:** ![mia](https://avatars.discourse-cdn.com/v4/letter/m/da6949/32.png) [@mia](https://community.naturalcapitalalliance.org/u/mia)\ **Post date:** [August 12, 2023, 2:29am UTC](https://community.naturalcapitalalliance.org/t/the-ndr-model-output-is-wrong/3999/3 "2023-08-12T02:29:09Z")
The flow model display is complete, why is this? ![image](https://canada1.discourse-cdn.com/flex031/uploads/naturalcapitalproject/original/2X/9/9df843a42ab770c5e704014b60528010226d4f1c.png) ---
**Author:** ![swolny](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.naturalcapitalalliance.org/swolny/32/181_2.png) [@swolny](https://community.naturalcapitalalliance.org/u/swolny)\ **Post date:** [August 14, 2023, 2:16pm UTC](https://community.naturalcapitalalliance.org/t/the-ndr-model-output-is-wrong/3999/4 "2023-08-14T14:16:32Z")
Hi @mia - Is this second map the _stream.tif_ model output? If so, you can see that the streams are defined where _stream.tif_ has a value of 1. Anywhere the streams have a value of 1, the _export_ results are NoData, because the model does not calculate nutrient within the stream network. ~ Stacie ---
**Author:** ![mia](https://avatars.discourse-cdn.com/v4/letter/m/da6949/32.png) [@mia](https://community.naturalcapitalalliance.org/u/mia)\ **Post date:** [August 14, 2023, 2:37pm UTC](https://community.naturalcapitalalliance.org/t/the-ndr-model-output-is-wrong/3999/5 "2023-08-14T14:37:23Z")
What does that have to do with incomplete boundaries? How should we solve it? ---
**Author:** ![swolny](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.naturalcapitalalliance.org/swolny/32/181_2.png) [@swolny](https://community.naturalcapitalalliance.org/u/swolny)\ **Post date:** [August 14, 2023, 3:11pm UTC](https://community.naturalcapitalalliance.org/t/the-ndr-model-output-is-wrong/3999/6 "2023-08-14T15:11:23Z")
Maybe I don’t understand what you mean by “incomplete boundaries”. Can you post an image showing the boundaries that you expect, along with the boundaries that the model is producing? For example, is the model not producing results within the entire watershed that you’re providing as input? If so, post a map showing the watershed boundary with the model results so we can see the difference. ~ Stacie ---
**Author:** ![mia](https://avatars.discourse-cdn.com/v4/letter/m/da6949/32.png) [@mia](https://community.naturalcapitalalliance.org/u/mia)\ **Post date:** [August 14, 2023, 11:23pm UTC](https://community.naturalcapitalalliance.org/t/the-ndr-model-output-is-wrong/3999/7 "2023-08-14T23:23:41Z")
This is the boundary of the model results ![3b4f2ccbf81513187e6d564c6913dce](https://canada1.discourse-cdn.com/flex031/uploads/naturalcapitalproject/original/2X/0/01940d83f97cdcc693004bf192af554cf73bdab1.jpeg) This is the boundary I want ![image](https://canada1.discourse-cdn.com/flex031/uploads/naturalcapitalproject/original/2X/6/6be74e6aabd507f3c9319298c4992e25ccbc6a83.png) ---
**Author:** ![swolny](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.naturalcapitalalliance.org/swolny/32/181_2.png) [@swolny](https://community.naturalcapitalalliance.org/u/swolny)\ **Post date:** [August 15, 2023, 12:41am UTC](https://community.naturalcapitalalliance.org/t/the-ndr-model-output-is-wrong/3999/8 "2023-08-15T00:41:22Z")
It looks like there is data missing in different areas around the edge of the watershed. Please check out the [User Guide section Defined Area of Outputs](https://storage.googleapis.com/releases.naturalcapitalproject.org/invest-userguide/latest/en/ndr.html#defined-area-of-outputs) and see if that explains the missing data. Note that it contains a link to the SDR chapter, with more information. ~ Stacie ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex031/uploads/naturalcapitalproject/original/2X/8/8d95591aa074da87ea0fdd61ca47c1c3c0588aa7.png) [@system](https://community.naturalcapitalalliance.org/u/system)\ **Post date:** [November 13, 2023, 12:41am UTC](https://community.naturalcapitalalliance.org/t/the-ndr-model-output-is-wrong/3999/9 "2023-11-13T00:41:26Z")
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