alpha coef.

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Santiago Monerris

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Aug 21, 2025, 5:22:35 PMAug 21

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Hi, I'm working on calibrating a project, but I don't recognize the description of a parameter, which is alpha. The documentation lists it as alpha_bf (https://swatplus.gitbook.io/io-docs/introduction-1/aquifers/aquifer.aqu/alpha_bf), and I don't know if it's the same coefficient I use in SWAT+ toolbox. Thanks.

Mario Fomaca Jr

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Aug 22, 2025, 10:25:03 AMAug 22

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I believe it is alpha.aqu in new SWAT+ model (alpha_bf.gw in SWAT 2012), which represents "lag factor for gw recession curve". alpha.aqu ranges from 0-1 (days).

Mario

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