Officials said engineer John Ruppert was electrocuted on Friday in Lake Powell, a reservoir in the Colorado River between Utah and Arizona.
He was trying to make a repair on the house boat where he and his family were vacationing.
Officials said his family was now going to Salt Lake City, Utah, where Ruppert's body was being delivered.
SBFD officials said he was with the San Bernardino Fire Department for over 10 years, and asked to keep his wife, Kristen, and his family in prayers and thoughts.
A GoFundMe page was set up for the Ruppert family. To donate, visit https://www.gofundme.com/supporttheRupperts.