Displayed is the tip of a Juvenile Salmon Acoustic Telemetry System (JSATS) receivers for a telemetry survey in Stockton, California, on Sept. 10, 2025. The receiver’s red light indicates it is powered on and ready to collect sound signals that track juvenile salmon and green sturgeon movement in the lower Sacramento River. The U.S. Army Corps of Engineers Sacramento District conducts telemetry surveys to close critical data gaps on green sturgeon passage in the lower Sacramento River, providing valuable information to partner agencies for setting river flow requirements, managing dam releases, and improving the survival of this federally protected species. (U.S. Army photo by Bertha Smith, U.S. Army Corps of Engineers Sacramento District Public Affairs)