2011 SAC fluvial sediment transport as an overlay to instream flow recommendations for the environmental flows allocation process addendum

Early in the Senate Bill 3 (SB3) process, the Science Advisory Committee (SAC) issued guidance on considering geomorphological processes, specifically sediment transport, as an overlay in refining the recommended environmental flow regime for a stream or river (SAC, 2009a). Since then, several Basin and Bay Expert Science Teams (BBESTs) have contended with issues emerging from the details of applying this guidance, particularly in interpreting the role of sedimentary processes in altering the geomorphology of the stream. The purpose of this addendum is to clarify and augment the previous guidance to address these concerns.