Science activity

Science activity #50148, updated 29 April 2022

Spring Kodiak Trawl Survey

Description / purpose

The Spring Kodiak Trawl Survey (SKT) has sampled annually since its inception in 2002. The SKT determines the relative abundance and distribution of spawning delta smelt (Hypomesus transpacificus). The SKT samples 40 stations each month from January to May. These 40 stations range from San Pablo Bay upstream to Stockton on the San Joaquin River, Walnut Grove on the Sacramento River, and the Sacramento Deep Water Ship Channel. Each 'Delta-wide' survey takes approximately 4 - 5 days per month to complete. Historically, 'Delta-wide' surveys were followed by a 'Supplemental' survey two weeks later to intensively sample areas of highest delta smelt concentration to estimate the proportion of male and female delta smelt that were in pre-spawning, spawning and spent maturation stages. Beginning in 2008, in an effort to minimize take of spawning adults, routine 'Supplemental' surveys were discontinued and are now only conducted under the recommendation of the Smelt Working Group and the approval of managers.

Linked science activities

None specified

Collaborators

None specified

Activity status

  • 1 Awarded / Initiating (1961)
  • 2 In progress / Ongoing (1961 - 2019)
  • 3 Complete

Funding summary

Total allocated funding: $0

Location

Subbasins
Delta regions

Geographic tags

None specified

Products and outputs

Type Title Description Views
Report Spring Kodiak Trawl Survey Metadata Metadata includes program objective and history, g 0
Link Spring Kodiak Trawl Survey website Project website for the Spring Kodiak Trawl Survey 0
Link Interagency Ecological Program (IEP) 2019 Work Plan and Funding This Work Plan reflects the annually‐planned 0

Type and context