Monitoring juvenile Chinook salmon outmigration using rotary screw traps on Yuba River

California Department of Water Resources (DWR) currently operates
multiple eight-foot rotary screw traps (RSTs) at Hallwood Boulevard
RM 7.5. RST operations were conducted by CDFW and then under the
direction of the Yuba River Management Team from 1999 to 2009 at the
Hallwood Boulevard site; and resumed in 2022 by DWR. The Hallwood
site will essentially sample all areas of the lower Yuba River
upstream of Hallwood Boulevard. Additionally, the Hallwood site is
located downstream of the bulk of adult Chinook salmon spawning
areas and downstream of all known spring-run Chinook salmon
spawning. Data are currently being used to inform the development of
a juvenile production estimate (JPE) for spring-run Chinook salmon
in the Sacramento River Watershed as required by Incidental Take
Permit No. 2081-2019-006-00 issued by CA Department of Fish and
Wildlife (CDFW) to DWR for the long-term operation of the State
Water Project. Data within the current year’s monitoring season are
considered provisional.