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Surrogate Analysis and Index Developer 2.0

October 13, 2026

SAID 2.0 is a Python port of the Matlab application SAID 1.1. It was developed by the USGS to assist in creating linear regression models that relate constituent and surrogate parameters.
SAID provides visual and quantitative diagnostics to the user. The tool also processes acoustic parameters to be used as explanatory variables for suspended-sediment concentrations (SSC).

Publication Year 2026
Title Surrogate Analysis and Index Developer 2.0
DOI 10.5066/P1QAFTCM
Authors Colleen M Barr, Marian M Domanski, Travis Knight
Product Type Software Release
Record Source USGS Asset Identifier Service (AIS)
USGS Organization Water Resources Mission Area - Headquarters
Rights This work is marked with CC0 1.0 Universal
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