Science activity

Science activity #50164, updated 29 April 2022

Yolo Bypass Fish Monitoring

Description / purpose

California Department of Water Resources (DWR) has operated a fisheries monitoring program in the Yolo Bypass, a seasonal floodplain and tidal slough, since 1998. The objectives of the Yolo Bypass Fish Monitoring Program (YBFMP) are to: (1) collect baseline data on lower trophic levels (phytoplankton, zooplankton, and aquatic insects), juvenile fish and adult fish, hydrology, and water quality parameters;(2) investigation of the temporal and seasonal patterns in chlorophyll-a concentrations, including whether high concentrations are exported from the Bypass during agricultural and natural flow events and the possibility of manipulating bypass flows to benefit listed species like Delta Smelt (Hypomesus transpacificus) and Chinook salmon (Oncorhynchus tshawytscha). The YBFMP operates a rotary screw trap and fyke trap, and conducts biweekly beach seine and lower trophic surveys in addition to maintaining water quality instrumentation in the bypass. The YBFMP serves to fill information gaps regarding environmental conditions in the bypass that trigger migrations and enhanced survival and growth of native fishes, as well as provide data for IEP synthesis efforts.

Linked science activities

None specified

Activity status

  • 1 Awarded / Initiating (0)
  • 2 In progress / Ongoing (0 - 0)
  • 3 Complete

Funding summary

Total allocated funding: $0

Location

Subbasins
Delta regions

Geographic tags

None specified

Products and outputs

Type Title Description Views
Link DWR Biological Monitoring & Assessment This webpage provides an overview of the biologica 3
Link Yolo Bypass Fish Monitoring Program Data Package 2018 Overview of the Yolo Bypass Fish Monitoring Progra 3
Link Interagency Ecological Program (IEP) 2019 Work Plan and Funding This Work Plan reflects the annually‐planned 1

Type and context