I have watersheds shapefile created, some discharge their water to the east, others to the west.

Is there is a way to automatically select the ones that discharges to the East using ArcMap 10.3?

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    You have three software packages tagged, and no indication of what you have tried or where you are stuck.
    – Vince
    Commented Sep 18, 2020 at 14:57
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    Please take the Tour, which emphasizes the importance of asking One question per Question. By specifying several different solution stacks, you are effectively asking multiple questions, which may result in closure for lack of focus. Choose one environment, and show what you have attempted.
    – Vince
    Commented Sep 18, 2020 at 15:45
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    ...in QGIS, ArcGIS 10.0, and SAGA
    – Vince
    Commented Sep 18, 2020 at 15:49
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    If you are focusing your question on ArcGIS Desktop then are you using ArcGIS Pro or ArcMap? Please use the edit button beneath your question to revise it with any requested clarifications.
    – PolyGeo
    Commented Sep 18, 2020 at 19:21
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    I don't understand all fuss around specific software. Though picture can help. Simplistic approach - create fishnet 1 row, 2 columns. If outlet sits in left, western.
    – FelixIP
    Commented Sep 19, 2020 at 20:21

1 Answer 1


I had asked this question before and I solved it in this thread

here is a link

Drainage divide

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