Lights, sound…bubbles! New virtual barrier deters baby salmon from Delta death trap
If you visit the Delta town of Walnut Grove during winter or spring, look for a surprise in the Sacramento River just before it meets Georgiana Slough. A steady stream of bubbles rises from the river bottom, accompanied by flashes of bright yellow strobe lights and low whooshing sounds. It looks like an art installation, especially at night. But this barrage of light, noise and bubbles is actually there to protect imperiled baby salmon. F
Related article:
- U.S. Fish and wildlife Service – Blog: California Dreaming: Saving Farms and Salmon
