University of Washington

Central Valley Juvenile Salmonid Monitoring for Unmarked Steelhead, 8/1/2025 to 7/31/2026

Data Courtesy of USFWS, Lodi and USFWS, Red Bluff and California Department of Fish & Wildlife via CalFish and Pacific States Marine Fisheries Commission via CalFish
Juvenile Monitoring & Sampling Queries
Cohort Juvenile Monitoring Juvenile Salmonid Monitoring Juvenile Life Stages Red Bluff Juvenile Estimates

Sacramento River

Red Bluff Diversion Dam Rotary Screw Traps with CDEC Daily Average River Data

multiple line plot juvenile sampling and water conditions at Red Bluff Diversion Dam Rotary Screw Traps with CDEC Daily Average River Data

Tisdale Weir Rotary Screw Trap with Colousa (COL) Daily Average Flow

multiple line plot juvenile sampling and water conditions at Tisdale Weir Rotary Screw Trap with Colousa (COL) Daily Average Flow

Lower Sacramento River

Knights Landing Rotary Screw Trap with Wilkins Slough (WLK) Daily Average Flow

multiple line plot juvenile sampling and water conditions at Knights Landing Rotary Screw Trap with Wilkins Slough (WLK) Daily Average Flow

Sacramento Trawls (@ Sherwood Harbor) with CDEC Daily Average

multiple line plot juvenile sampling and water conditions at Sacramento Trawls (@ Sherwood Harbor) with CDEC Daily Average

Verona, Elkhorn, Sand Cove, Miller Park, Sherwood Harbor, Discovery Park, American River, and Garcia Bend Beach Seines

multiple line plot juvenile sampling and water conditions at Verona, Elkhorn, Sand Cove, Miller Park, Sherwood Harbor, Discovery Park, American River, and Garcia Bend Beach Seines

Chipps Island Trawls

multiple line plot juvenile sampling and water conditions at Chipps Island Trawls

San Joaquin River

Mossdale Trawls with CDEC Daily Average River Data

multiple line plot juvenile sampling and water conditions at Mossdale Trawls with CDEC Daily Average River Data

Query Notes

  • Juvenile Monitoring and Sampling Metadata
  • Historically, the USFWS Red Bluff Fish and Wildlife Office used a Normal Linear Model to predict the daily combined capture efficiency of four 8’ diameter rotary screw traps (RSTs) for brood years 2004–2019 under an assumption of homogenous capture efficiencies among RSTs. USFWS developed new Binomial Generalized Linear Models to predict the daily capture efficiencies of four 5’ and one 8’ diameter RST individually for brood years 2020–present without an assumption of homogenous capture efficiencies of different RSTs. The new method accommodates flexible sampling with any number of 5’ and 8’ diameter RSTs and allows capture efficiencies to vary among different RSTs.
  • Red Bluff Diversion Dam: Unmarked are unmarked, not mark-corrected.