“…Sediment augmentation has been proposed as an alternative intervention for alleviating urban river degradation (Papangelakis & MacVicar, 2020; Papangelakis, MacVicar, & Ashmore, 2019), which relies on feeding alluvial material into the channels, or through artificially emplacing a layer of alluvium on the channel bed. Tests of gravel augmentation have been conducted in alluvial channels to alleviate sediment starvation downstream of dams (Gaeuman, 2014; Gaeuman, Stewart, Schmandt, & Pryor, 2017; Liedermann, Gmeiner, Kreisler, Tritthart, & Habersack, 2018; Sklar et al, 2009), and to enhance the suitability of aquatic habitat (Merz & Setka, 2004; Ock, Gaeuman, McSloy, & Kondolf, 2015; Staentzel et al, 2018; Zeug et al, 2014).…”