Edward Somera, an aquatics specialist for the state, sprays herbicide on water hyacinth on the Tuolumne River near Hughson in 2015.
Edward Somera, an aquatics specialist for the state, sprays herbicide on water hyacinth on the Tuolumne River near Hughson in 2015. Brian Clark bclark@modbee.com
Edward Somera, an aquatics specialist for the state, sprays herbicide on water hyacinth on the Tuolumne River near Hughson in 2015. Brian Clark bclark@modbee.com

A field guide to aiding salmon (as preferred by SF and other Tuolumne River diverters)

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