Jennifer Jean Hart and Sarah Margaret Hart, both 38, and three of their children, Abigail, 14, Jeremiah, 14, and Markis, 19, were found dead in the vehicle, while authorities believe the couple's other children, Devonte, 15, Hannah, 16, and Sierra, 12, -who are still missing-were also in the SUV at the time of the crash.
Siddhant Thottapilly was the last to be found after the family of four went missing earlier this month.
Family members are remembering a Nassau County mother-of-five killed in a motorcycle crash for her larger-than-life personality and her heart of gold.
The vehicle was encased in sediment and visibility was poor but divers believed there was at least one body inside, officials said. Their disappearance on April 6 coincided with reports of a vehicle seen plunging into the Eel River during last week's storm.More news: Facebook has spent $20M on Zuckerberg's security since 2015
Inside were the bodies of Sandeep Thottapilly, 42, and 9-year-old Saachi Thottapilly.
On Sunday, 70 searchers using Jet Skis, boats and kayaks worked along the river in an ongoing effort to find the vehicle and family.
He was the last family member unaccounted for after the crash.
The family had gone missing while travelling to meet with family members in San Jose, California.
Siddhant Thottapilly was found about 4 p.m. downstream of the place where the SUV plunged into the Eel River in Leggett, according to the Mendocino County Sheriff's Office.More news: Trump orders air strikes on Syria in response to chemical attack
The Klamath River and a string of parks lie along Highway 101, north of where motorists saw the SUV fall into the river.
The meeting, in Armagh City Hotel, runs from 7.30pm until 9pm and is open to all parents who have lost a child, whether recently or many years ago.
In that case, Jennifer and Sarah Hart and three of their six children were found dead at the scene and three other children remain missing.
Evidence unearthed since the incident have California officials believing that the crash was intentional.More news: Southampton 2 Chelsea 3: Two-goal substitute Giroud inspires turnaround