Between 2011 and 2018, numerous restoration treatments were constructed on the Straight and Braided Reaches of the Kootenai River in northern Idaho as part of the Kootenai River Habitat Restoration Project. This child item of the larger data release contains two .csv file with the data used to investigate the potential impacts of restoration treatments on suspended sediment transport within the study reach. One .csv file contains data collected between 2006 and 2023 at the upstream end of the study reach at U.S. Geological Survey (USGS) streamgage Kootenai River Below Moyie River (streamgage 12308000) and USGS site 4842231161104. The other file contains data collected between 2006 and 2023 at the downstream end of the study reach at USGS streamgage Kootenai River Tribal Hatchery near Bonners Ferry, ID (streamgage 12310100). Each .csv files contains measured suspended sediment concentrations (SSC, in mg/L), the percent fines (< 0.0625 mm) in each sample, and the estimated total discharge for tributaries between Libby Dam and the study reach. Estimated tributary discharge was used in the analysis rather than Kootenai River discharge because Libby Dam upstream of the study reach has a high sediment trapping efficiency and SSC in the study reach is driven primarily by tributary inputs between Libby Dam and the study reach.