A bouquet of flowers on Point Reyes-Petaluma Road now overlooks the spot where a member of a well-known ranching family fatally crashed into the Nicasio Reservoir earlier this week.

Rich Giacomini, 71, of Point Reyes Station, was traveling southbound when his pickup truck swerved and crashed through a guardrail before tumbling several feet into the reservoir just before 6 p.m. on Monday.

The county sheriff’s office, which was notified by an emergency tracking device inside…