Elevation Bands

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Osman Furkan TOKGÖZ

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Dec 8, 2025, 8:31:23 AM (9 days ago) Dec 8

to QSWAT+

QSWAT+ separates HRUs into slope bands but does not separate them into elevation bands. As a result, areas at 2900 meters and 1600 meters can fall within the same HRU.

QSWAT+ creates the hru.con file. In this file, each HRU has an elevation value. However, within the same HRU there are portions with more than 1000 meters of elevation difference. (There is a problem here.)
SWAT+ reads the HRU elevation values from hru.con. (This part is fine.)
SWAT+ recalculates precipitation using the PLAPS value based on the difference between the precipitation station elevation and the HRU elevation. (This part is also fine.)

In my model, PLAPS values come out extremely low. According to the literature, the value should be around 30–40 mm/km, but in my case it is around 1–2.

In QSWAT+, elevation bands appear as an “optional” feature. However, when I enter values here, I don’t see any resulting effect. The number of HRUs does not increase. Only slope bands increase the number of HRUs and subdivide each HRU based on slope.

Is there something I’m missing?
What should I do to create elevation bands and generate HRUs based on them?