US Army Corps of Engineers
Sacramento District

A single day of volunteering makes a giant difference
Col. David Ray, commander U.S. Army Corps of Engineers Sacramento District, watches as Debi Johnson of Mussel Dogs demonstrates how quickly her chocolate lab "Popeye" can find invasive species like quagga or zebra mussels on a boat. The demonstration was part of the National Public Lands Day event held at Success Lake on September 22, 2018.