Rotary Screw Trap Operations – Sacramento River (Knights Landing)

The contract involves operating a rotary screw trap on the Sacramento River near Knights Landing, California, with the purpose of collecting real-time data on juvenile salmonid migration. This data collection is essential for monitoring fish populations and supports water management decisions by producing the daily Knights Landing Catch Index (KLCI). The subcontract is issued by the Department of the Interior through its regional office and falls under the NAICS code 213112, which relates to support activities for oil and gas operations, although in this context it is specifically applied to environmental monitoring. This operation requires consistent and precise data gathering to ensure accurate migration indices, which are critical for managing water resources effectively and protecting salmonid species. The contract was posted in late April 2026 and is structured as a subcontract, though specific details such as set-aside status, point of contact, and exact location of performance are not provided. Overall, the work supports ecological monitoring efforts that inform regional water management policies.