After California mudslides kill 19, rescuers scramble to find 7 people still missing
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WATCH: Some Southern California residents remain stranded after the mudslides that killed 17 people and damaged 500 homes, according to officials.

Rescue crews, some working with cadaver-sniffing dogs, scrambled Saturday to find several residents still missing in Southern California, where torrential rains and mudslides have crushed homes and killed at least 19 people.

Multiple agencies using boats and helicopters, including the U.S. Coast Guard and Navy, fanned out across Santa Barbara County hoping to find people alive. Firefighters, who battled blazes that swept through the area in December, went from flattened home to flattened home looking for survivors.

Santa Barbara County officials said the body of 25-year-old Morgan Corey was found Saturday. A 62-year-old man who was listed as missing was located safely, Sheriff Bill Brown said at a press conference.

At least five people remained missing as of Saturday morning, but that number will continue to fluctuate as search efforts continue.

A home in Montecito, Calif., Jan. 10,. 2018. surrounded by boulders washed into the area after heavy rainfall.

Rescue crews were focusing on Montecito, an unincorporated area near the city of Santa Barbara, which was devastated by flooding and mudslides that wiped out dozens of homes and dislodged boulders the size of cars and sent them crashing into homes. Parts of Highway 101 in the area remained closed, swamped by debris flows that slid down fire-scarred mountains in the area.

Montecito was placed under a new evacuation order at 6 p.m. local time Thursday. Almost the entire community -- about 10,000 people -- is now under mandatory evacuation orders, which could last "one to two weeks," according to the Santa Barbara County fire chief.

Cottages surrounded by debris and mud after mudslides are seen in Montecito, Calif., in this photo provided by the Santa Barbara County Fire Department, Jan. 9, 2018.

At least 65 homes in Santa Barbara County were destroyed in the storm and another 462 were damaged, while eight commercial buildings were flattened, according to the latest count by Santa Barbara County Fire Department.

A damaged home in Montecito, Calif., Jan. 10, 2018 after dozens of homes were swept away or heavily damaged after heavy rains brought mud and boulders roaring down hills stripped of vegetation by a wildfire last month.

Anne Marie Cullen was one of the rescue workers combing through homes with a cadaver-sniffing dog, looking for people who vanished in the mudslides.

"So obviously, she's looking for human remains," Cullen told ABC News, referring to her canine partner. "Which could be an entire body or it could be part of a body. So she's doing a meticulous search where she sniffs little nooks and crannies and sometimes it could be a person and the scent can trickle its way up."

Mudflow and damaged homes in Montecito, Calif., Jan. 10, 2018.

Cullen said the work has been exhausting and, at times, emotional.

"It overwhelms everybody ... but in search and rescue you distance yourself," Cullen said. "You have to put a shield up and do your job and just remember ... that's not to say that it doesn't upset us but when we're out here we just do our job."

A firefighter stands on the roof of a house submerged in mud and rocks, Jan. 10, 2018, in Montecito, Calif.

Deputy Dan Page, chief of a Los Angeles County Sheriff's Department rescue team, said the search effort was dangerous for rescuers, who had to trudge through debris and knee-deep water littered with nails, broken glass and splintered wood.

A large boulder rests near destroyed homes along San Ysidro Creek near East Valley Road in Montecito, Calif., Jan. 10, 2018.

"We've gotten multiple reports of rescuers falling through manholes that were covered with mud, swimming pools that were covered up with mud," Anthony Buzzerio, a Los Angeles County fire battalion chief, told ABC station KABC. "The mud is acting like a candy shell on ice cream. It's crusty on top but soft underneath, so we're having to be very careful."

A member of the Los Angeles County Fire Department Search and Rescue crew works near a car trapped under debris in Montecito, Calif., Jan. 10, 2018.

The rate of rainfall in Southern California on Tuesday was 18 times more than required to produce debris flow, according to an analysis by ABC News meteorologists.

Montecito alone saw heavy rainfall in a short amount of time. Because hundreds of thousands of acres were charred in the fires, the influx of water has nowhere to go.

Emergency personnel evacuate local residents and their dogs after a mudslide in Montecito, Calif., Jan. 9, 2018.

Aerial footage over Montecito showed a contrast of widespread damage next to homes completely untouched by the disaster. The roofs of some homes in canyon runoff areas were encased in mud, which has now dried.

The Santa Barbara County Office of Emergency Management said Montecito would be without potable water, electricity and sanitation "for an extended period of time."

Crews work to clear the muck left by the mudslide in Montecito, Calif., Jan. 15, 2018. Photo Credit: Jim Wilson/The New York Times
Workers use vacuum trucks to clear the muck left by the mudslide from Highway 101 in Montecito, Calif., Jan. 15, 2018. Photo Credit: Jim Wilson/The New York Times
Firefighters search through the wreckage of a car left by mudslides in Montecito, Calif., Jan. 14, 2018. Photo Credit: Jim Wilson/The New York Times
A warning to first responders that a pool lies underneath a layer of muck beside a home destroyed by the mudslide in Montecito, Calif., Jan. 15, 2018. Photo Credit: Jim Wilson/The New York Times
In this Jan. 15, 2018 image from a video provided by the Santa Barbara County Fire Department shows the U.S. 101 freeway which remains underwater as clean-up crews work to clear the roads throughout Montecito, ... Photo Credit: Mike Eliason/AP
People attend a candlelight vigil in Santa Barbara, Calif., Jan. 14, 2018, to pay tribute to the people who were killed when mudslides ravaged a Southern California. Photo Credit: Mike Balsamo/AP
A mud-filled property is seen after a mudslide in Montecito, California, Jan. 12, 2018. Photo Credit: Kyle Grillot/Reuters
A search and rescue dog is guided through properties after a mudslide in Montecito, California, Jan. 12, 2018. Photo Credit: Kyle Grillot/Reuters
Crews pump mud on Highway 101 after a mudslide, Jan. 13, 2018, in Montecito, Calif. Photo Credit: Marcio Jose Sanchez/AP
Rescue workers search in an around cars for missing persons after a mudslide in Montecito, Calif., Jan. 12, 2018. Photo Credit: Kyle Grillot/Reuters
Emergency personnel carry a woman that was rescued from a collapsed house after a mudslide in Montecito, Calif.,Jan. 9, 2018. Photo Credit: Kenneth Song/Santa Barbara News-Press via Reuters
A firefighter stands on the roof of a house submerged in mud and rocks, Jan. 10, 2018, in Montecito, Calif., after mudslides in Southern California destroyed houses, swept cars to the beach and left more than a... Photo Credit: Marcio Jose Sanchez/AP Photo
A Los Angeles County urban search and rescue worker searches a pile of debris for victims of a mudslide, Jan. 11, 2018 in Montecito, Calif. Photo Credit: Justin Sullivan/Getty Images
Emergency personnel evacuate local residents and their dogs after a mudslide in Montecito, Calif., Jan. 9, 2018. Photo Credit: Kenneth Song/Santa Barbara News-Press via Reuters
A handout photo made available by the Santa Barbara County Fire Department shows an aerial view taken aboard Santa Barbara County Air Support Unit's Fire Copter 308 of mudflow and damage following heavy rains i... Photo Credit: EPA
Mud and debris flow on the roadway due to heavy rain in Montecito. Calif., Jan. 9, 2018. Photo Credit: Mike Eliason/Santa Barbara County Fire Department via AP
Mud fills the interior of a car destroyed in a rain-driven mudslide in a neighborhood under mandatory evacuation in Burbank, Calif., Jan. 9, 2018.

Photo Credit: Robyn Beck/AFP/Getty Images

A house stands in the aftermath of the mudslide on East Valley Road in Montecito, Calif., Jan. 11, 2018.

Photo Credit: Juan Carlo/Ventura County Star via USA TODAY NETWORK

A member of the Los Angeles County Fire Department Search and Rescue crew works near a car trapped under debris in Montecito, Calif., Jan. 10, 2018. Photo Credit: Marcio Jose Sanchez/AP
A large boulder rests near destroyed homes along San Ysidro Creek near East Valley Road in Montecito, Calif., Jan. 10, 2018. Photo Credit: Mike Eliason/Santa Barbara County Fire Department via AP
US 101 Freeway at the Olive Mill Road overpass flooded with runoff water from Montecito Creek and blocked with mudflow and debris following heavy rains in Montecito, Calif., Jan. 9, 2018. Photo Credit: Mike Eliason/Santa Barbara County Fire Dept. via EPA
The 101 Highway is seen closed on both sides in Montecito, California, U.S. Jan. 11, 2018. Photo Credit: Kyle Grillot/Reuters

ABC News' Morgan Winsor contributed to this report.