Science activity

Science activity #54475, updated 30 July 2026

Post-drought wildfire retardant first flushes on early life stage Chinook Salmon (Oncorhynchus tshawytscha) and Rainbow Trout (O. mykiss).

Description / purpose

This project will evaluate sublethal toxicity of current-use and new fire retardants on Chinook Salmon, a listed species, as well as Rainbow Trout. Non-weathered and weathered retardants will be tested, with the intention being to generate standard LC50s and EC50s from embryo to alevin, and for weathered retardants to more closely mimic exposure a first flush-like event. Behavioral alterations, yolk sac size and potential latent effects on growth will be recorded. These data will allow managers to design approaches for fire management and prevention that have the lowest possible impact on waterways.

Linked science activities

None specified

Collaborators

Susanne Brander, Principal investigator - Oregon State University

Activity status

  • 1 Awarded / Initiating (2023)
  • 2 In progress / Ongoing (2023 - 2026)
  • 3 Complete

Funding summary

Total allocated funding: $580,845

Label Value
Contract # or labor code DSC22083
Implementing organization University of California - Davis [UC Davis]
Funding organization Delta Stewardship Council
Funding Source Delta Stewardship Council - General Fund
Date of award 2023-05-03
Date of fiscal year-end 2026-06-30
Total award amount $229,884
State type of obligation UC-CSU-UEI-GOV
Federal type of obligation Not provided
Reimbursability Not provided
Procurement mechanism Not provided
Annual expenditures

2024 - $28571.18 (Actual)

Label Value
Contract # or labor code DSC22082
Implementing organization Oregon State University
Funding organization Delta Stewardship Council
Funding Source Delta Stewardship Council - General Fund
Date of award 2023-06-01
Date of fiscal year-end 2026-06-30
Total award amount $350,961
State type of obligation Consulting services
Federal type of obligation Not provided
Reimbursability Not provided
Procurement mechanism Not provided
Annual expenditures

2024 - $185388.45 (Actual)

Location

Subbasins
Delta regions

Geographic tags

None specified

Products and outputs

None provided

Type and context