All Topics |
Topic: “Using transformed streamflow observations in PEST calibration to improve low-flow performances”
| Author | Message |
|---|
|
Subject: Using transformed streamflow observations in PEST calibration to improve low-flow performances
Posted: 7/14/2026 Viewed: 3 times
Hello,
I am using WEAP with the Soil Moisture Method - GW Wedge and the built-in PEST calibration tool. I would like to improve the calibration of low flows. At present, the calibration on raw daily streamflow appears to be strongly influenced by peak flows, while the model still underestimates streamflow during recession periods. I would like to know whether it is possible to calibrate PEST using transformed streamflow values, for example a Box-Cox or log transformation. Can the standard WEAP-PEST wizard calibrate against a transformed streamflow variable? If yes, how should both observed and simulated flows be transformed consistently? If not, is it possible to modify the generated PEST files or use an external post-processor? What alternatives would you recommand? Thank you for your help, Guillaume |
Topic: “Using transformed streamflow observations in PEST calibration to improve low-flow performances”