Yolo Bypass Fish Monitoring

Science activity #50164, updated 28 August 2024

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

Collaborators

Brian Schreier, Primary contact - California Department of Water Resource [DWR]

Activity status

1 Awarded / Initiating (1998)
2 In progress / Ongoing (26 - 26)
3 Complete

Funding summary

Total allocated funding: $0

Location

Subbasins

Delta regions

Geographic tags

None specified

Products and outputs

Title	Description	Views
DWR Biological Monitoring & Assessment	This webpage provides an overview of the biologica	6
Yolo Bypass Fish Monitoring Program Data Package 2018	Overview of the Yolo Bypass Fish Monitoring Progra	5
Interagency Ecological Program (IEP) 2019 Work Plan and Funding	This Work Plan reflects the annuallyâ€planned	2

Type and context

Science action area

N/A (project initiated prior to 2017)

Management themes

Environmental conditions , Flood risk and land use management , Habitat management , Invasive / non-native species management , Native species management , Water quality

Science themes

Aquatic vegetation , Environmental conditions , Fish , Floodplain , Food webs , Habitat changes , Invasive / non-native species , Invertebrates , Nutrients, energy and food web , Species , Tidal wetlands , Water quality

Types

Core monitoring , Status and trend monitoring

Science functions

Monitoring – Status and trends

Management actions

Creation of favorable habitat conditions for native species , Flood control , Habitat protection / enhancement / restoration , Natural environmental flows , Population enhancement of listed species

Science Topics

Chinook Salmon , Chlorophyll A / B , Conductivity , Delta Smelt , Direction , Dissolved oxygen , Endangered species , Fish , Flood , Food webs , Green sturgeon , Habitat , Habitat restoration , Insects , Intertidal / transition zones , Invasive / non native species , Invertebrates , Longfin Smelt , Main channels , Nitrogen , Nitrogen / ammonia , Nutrients , Other species , Other zooplankton , Pelagic fish , pH , Phytoplankton , Primary production , Sacramento Splittail , Salmon migration , Salmon rearing , Saltwater / freshwater marshes , SAV/FAV , Seasonally flooded , Solar irradiance , Stage , Steelhead Trout , Striped bass , Sturgeon , Submerged aquatic vegetation , Surface water / flow , Tides , Turbidity , Velocity , Water , Water temperature , Wetlands , White Sturgeon , Zooplankton

Lead implementing organization

California Department of Water Resource [DWR]

Partner implementing organizations

California Department of Fish and Wildlife [CDFW] , U.S. Fish and Wildlife Service [USFWS] , National Marine Fisheries Service [NMFS]

Funding organizations

None specified

Funding programs

None specified

Funding sources

None specified